[plasma/plasma-pa] /: Convert license headers to SPDX

Nicolas Fella null at kde.org
Mon Mar 1 09:59:10 GMT 2021


Git commit 495b30a5ea829b092a3095a5a68e4d2462bacf7e by Nicolas Fella.
Committed on 01/03/2021 at 09:58.
Pushed by nicolasfella into branch 'master'.

Convert license headers to SPDX

D  +0    -346  COPYING
D  +0    -510  COPYING.LIB
A  +26   -0    LICENSES/BSD-3-Clause.txt
A  +311  -0    LICENSES/GPL-2.0-only.txt
A  +604  -0    LICENSES/GPL-3.0-only.txt
A  +444  -0    LICENSES/LGPL-2.0-or-later.txt
A  +462  -0    LICENSES/LGPL-2.1-only.txt
A  +144  -0    LICENSES/LGPL-3.0-only.txt
A  +12   -0    LICENSES/LicenseRef-KDE-Accepted-GPL.txt
A  +12   -0    LICENSES/LicenseRef-KDE-Accepted-LGPL.txt
M  +2    -16   applet/contents/code/icon.js
M  +2    -16   applet/contents/config/config.qml
M  +3    -17   applet/contents/ui/ConfigGeneral.qml
M  +2    -16   applet/contents/ui/DeviceListItem.qml
M  +2    -16   applet/contents/ui/Header.qml
M  +4    -18   applet/contents/ui/ListItemBase.qml
M  +2    -16   applet/contents/ui/SmallToolButton.qml
M  +2    -16   applet/contents/ui/StreamListItem.qml
M  +3    -17   applet/contents/ui/main.qml
M  +2    -24   cmake/FindCanberraPulse.cmake
M  +2    -24   cmake/FindSoundThemeFreedesktop.cmake
M  +1    -1    doc/kcontrol/plasma-pa/index.docbook
M  +2    -16   src/canberracontext.cpp
M  +3    -17   src/canberracontext.h
M  +3    -17   src/card.cpp
M  +3    -17   src/card.h
M  +3    -17   src/client.cpp
M  +3    -17   src/client.h
M  +3    -17   src/context.cpp
M  +3    -17   src/context.h
M  +2    -15   src/debug.cpp
M  +2    -15   src/debug.h
M  +2    -16   src/device.cpp
M  +3    -17   src/device.h
M  +4    -19   src/gconfitem.cpp
M  +3    -15   src/gconfitem.h
M  +2    -14   src/gsettingsitem.cpp
M  +2    -14   src/gsettingsitem.h
M  +2    -16   src/kcm/module.cpp
M  +2    -16   src/kcm/module.h
M  +2    -16   src/kcm/package/contents/code/icon.js
M  +3    -17   src/kcm/package/contents/ui/Advanced.qml
M  +2    -16   src/kcm/package/contents/ui/CardListItem.qml
M  +4    -18   src/kcm/package/contents/ui/DeviceComboBox.qml
M  +4    -18   src/kcm/package/contents/ui/DeviceListItem.qml
M  +3    -17   src/kcm/package/contents/ui/MuteButton.qml
M  +4    -18   src/kcm/package/contents/ui/StreamListItem.qml
M  +3    -17   src/kcm/package/contents/ui/VolumeSlider.qml
M  +6    -20   src/kcm/package/contents/ui/main.qml
M  +2    -16   src/maps.cpp
M  +3    -17   src/maps.h
M  +3    -17   src/module.cpp
M  +3    -17   src/module.h
M  +3    -17   src/modulemanager.cpp
M  +2    -16   src/modulemanager.h
M  +3    -17   src/operation.cpp
M  +2    -16   src/operation.h
M  +2    -16   src/port.cpp
M  +3    -17   src/port.h
M  +3    -17   src/profile.cpp
M  +3    -17   src/profile.h
M  +4    -18   src/pulseaudio.cpp
M  +4    -18   src/pulseaudio.h
M  +3    -17   src/pulseobject.cpp
M  +3    -17   src/pulseobject.h
M  +2    -16   src/qml/globalactioncollection.cpp
M  +3    -17   src/qml/globalactioncollection.h
M  +3    -17   src/qml/listitemmenu.cpp
M  +3    -17   src/qml/listitemmenu.h
M  +3    -17   src/qml/microphoneindicator.cpp
M  +3    -17   src/qml/microphoneindicator.h
M  +2    -16   src/qml/plugin.cpp
M  +2    -16   src/qml/plugin.h
M  +3    -17   src/qml/volumefeedback.cpp
M  +3    -17   src/qml/volumefeedback.h
M  +3    -17   src/qml/volumeosd.cpp
M  +2    -16   src/qml/volumeosd.h
M  +3    -17   src/server.cpp
M  +2    -16   src/server.h
M  +3    -17   src/sink.cpp
M  +3    -17   src/sink.h
M  +2    -16   src/sinkinput.cpp
M  +3    -17   src/sinkinput.h
M  +3    -17   src/source.cpp
M  +3    -17   src/source.h
M  +2    -16   src/sourceoutput.cpp
M  +3    -17   src/sourceoutput.h
M  +2    -16   src/stream.cpp
M  +3    -17   src/stream.h
M  +3    -17   src/streamrestore.cpp
M  +3    -17   src/streamrestore.h
M  +3    -17   src/volumemonitor.cpp
M  +3    -17   src/volumemonitor.h
M  +2    -16   src/volumeobject.cpp
M  +3    -17   src/volumeobject.h

https://invent.kde.org/plasma/plasma-pa/commit/495b30a5ea829b092a3095a5a68e4d2462bacf7e

diff --git a/COPYING b/COPYING
deleted file mode 100644
index 5185fd3..0000000
--- a/COPYING
+++ /dev/null
@@ -1,346 +0,0 @@
-NOTE! The GPL below is copyrighted by the Free Software Foundation, but
-the instance of code that it refers to (the kde programs) are copyrighted
-by the authors who actually wrote it.
-
----------------------------------------------------------------------------
-			
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-               51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-			    Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.)  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
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-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-		    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
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-language.  (Hereinafter, translation is included without limitation in
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-Activities other than copying, distribution and modification are not
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-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
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-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
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-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
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-  2. You may modify your copy or copies of the Program or any portion
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-this License, whose permissions for other licensees extend to the
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-
-  4. You may not copy, modify, sublicense, or distribute the Program
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-Program), you indicate your acceptance of this License to do so, and
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-the Program or works based on it.
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-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
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-This section is intended to make thoroughly clear what is believed to
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-
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-the limitation as if written in the body of this License.
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-address new problems or concerns.
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-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
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-
-  10. If you wish to incorporate parts of the Program into other free
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-make exceptions for this.  Our decision will be guided by the two goals
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-of promoting the sharing and reuse of software generally.
-
-			    NO WARRANTY
-
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
-		     END OF TERMS AND CONDITIONS
-
-	    How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
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-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 19yy  <name of author>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
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-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-
-
-Also add information on how to contact you by electronic and paper mail.
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-If the program is interactive, make it output a short notice like this
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-
-    Gnomovision version 69, Copyright (C) 19yy name of author
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-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
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-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General
-Public License instead of this License.
diff --git a/COPYING.LIB b/COPYING.LIB
deleted file mode 100644
index 2d2d780..0000000
--- a/COPYING.LIB
+++ /dev/null
@@ -1,510 +0,0 @@
-
-                  GNU LESSER GENERAL PUBLIC LICENSE
-                       Version 2.1, February 1999
-
- Copyright (C) 1991, 1999 Free Software Foundation, Inc.
-	51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-[This is the first released version of the Lesser GPL.  It also counts
- as the successor of the GNU Library Public License, version 2, hence
- the version number 2.1.]
-
-                            Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-Licenses are intended to guarantee your freedom to share and change
-free software--to make sure the software is free for all its users.
-
-  This license, the Lesser General Public License, applies to some
-specially designated software packages--typically libraries--of the
-Free Software Foundation and other authors who decide to use it.  You
-can use it too, but we suggest you first think carefully about whether
-this license or the ordinary General Public License is the better
-strategy to use in any particular case, based on the explanations
-below.
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-  When we speak of free software, we are referring to freedom of use,
-not price.  Our General Public Licenses are designed to make sure that
-you have the freedom to distribute copies of free software (and charge
-for this service if you wish); that you receive source code or can get
-it if you want it; that you can change the software and use pieces of
-it in new free programs; and that you are informed that you can do
-these things.
-
-  To protect your rights, we need to make restrictions that forbid
-distributors to deny you these rights or to ask you to surrender these
-rights.  These restrictions translate to certain responsibilities for
-you if you distribute copies of the library or if you modify it.
-
-  For example, if you distribute copies of the library, whether gratis
-or for a fee, you must give the recipients all the rights that we gave
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-with the library after making changes to the library and recompiling
-it.  And you must show them these terms so they know their rights.
-
-  We protect your rights with a two-step method: (1) we copyright the
-library, and (2) we offer you this license, which gives you legal
-permission to copy, distribute and/or modify the library.
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-author's reputation will not be affected by problems that might be
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-
-  Finally, software patents pose a constant threat to the existence of
-any free program.  We wish to make sure that a company cannot
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-  Most GNU software, including some libraries, is covered by the
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diff --git a/LICENSES/BSD-3-Clause.txt b/LICENSES/BSD-3-Clause.txt
new file mode 100644
index 0000000..0741db7
--- /dev/null
+++ b/LICENSES/BSD-3-Clause.txt
@@ -0,0 +1,26 @@
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new file mode 100644
index 0000000..3b6070f
--- /dev/null
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@@ -0,0 +1,311 @@
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+source code, to be distributed under the terms of Sections 1 and 2 above on
+a medium customarily used for software interchange; or,
+
+c) Accompany it with the information you received as to the offer to distribute
+corresponding source code. (This alternative is allowed only for noncommercial
+distribution and only if you received the program in object code or executable
+form with such an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for making
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+the source code for all modules it contains, plus any associated interface
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+binary form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component itself
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+
+If distribution of executable or object code is made by offering access to
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+source code from the same place counts as distribution of the source code,
+even though third parties are not compelled to copy the source along with
+the object code.
+
+4. You may not copy, modify, sublicense, or distribute the Program except
+as expressly provided under this License. Any attempt otherwise to copy, modify,
+sublicense or distribute the Program is void, and will automatically terminate
+your rights under this License. However, parties who have received copies,
+or rights, from you under this License will not have their licenses terminated
+so long as such parties remain in full compliance.
+
+5. You are not required to accept this License, since you have not signed
+it. However, nothing else grants you permission to modify or distribute the
+Program or its derivative works. These actions are prohibited by law if you
+do not accept this License. Therefore, by modifying or distributing the Program
+(or any work based on the Program), you indicate your acceptance of this License
+to do so, and all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+6. Each time you redistribute the Program (or any work based on the Program),
+the recipient automatically receives a license from the original licensor
+to copy, distribute or modify the Program subject to these terms and conditions.
+You may not impose any further restrictions on the recipients' exercise of
+the rights granted herein. You are not responsible for enforcing compliance
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+
+7. If, as a consequence of a court judgment or allegation of patent infringement
+or for any other reason (not limited to patent issues), conditions are imposed
+on you (whether by court order, agreement or otherwise) that contradict the
+conditions of this License, they do not excuse you from the conditions of
+this License. If you cannot distribute so as to satisfy simultaneously your
+obligations under this License and any other pertinent obligations, then as
+a consequence you may not distribute the Program at all. For example, if a
+patent license would not permit royalty-free redistribution of the Program
+by all those who receive copies directly or indirectly through you, then the
+only way you could satisfy both it and this License would be to refrain entirely
+from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply and
+the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents
+or other property right claims or to contest validity of any such claims;
+this section has the sole purpose of protecting the integrity of the free
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+Many people have made generous contributions to the wide range of software
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+distribute software through any other system and a licensee cannot impose
+that choice.
+
+This section is intended to make thoroughly clear what is believed to be a
+consequence of the rest of this License.
+
+8. If the distribution and/or use of the Program is restricted in certain
+countries either by patents or by copyrighted interfaces, the original copyright
+holder who places the Program under this License may add an explicit geographical
+distribution limitation excluding those countries, so that distribution is
+permitted only in or among countries not thus excluded. In such case, this
+License incorporates the limitation as if written in the body of this License.
+
+9. The Free Software Foundation may publish revised and/or new versions of
+the General Public License from time to time. Such new versions will be similar
+in spirit to the present version, but may differ in detail to address new
+problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies
+a version number of this License which applies to it and "any later version",
+you have the option of following the terms and conditions either of that version
+or of any later version published by the Free Software Foundation. If the
+Program does not specify a version number of this License, you may choose
+any version ever published by the Free Software Foundation.
+
+10. If you wish to incorporate parts of the Program into other free programs
+whose distribution conditions are different, write to the author to ask for
+permission. For software which is copyrighted by the Free Software Foundation,
+write to the Free Software Foundation; we sometimes make exceptions for this.
+Our decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing and reuse
+of software generally.
+
+NO WARRANTY
+
+11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
+THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE
+STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM
+"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE
+OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE
+OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA
+OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES
+OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
+HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible
+use to the public, the best way to achieve this is to make it free software
+which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach
+them to the start of each source file to most effectively convey the exclusion
+of warranty; and each file should have at least the "copyright" line and a
+pointer to where the full notice is found.
+
+one line to give the program's name and an idea of what it does. Copyright
+(C) yyyy name of author
+
+This program is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation; either version 2 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA 02110-1301, USA. Also add information on how
+to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when
+it starts in an interactive mode:
+
+Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
+with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software,
+and you are welcome to redistribute it under certain conditions; type `show
+c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, the commands you use may be
+called something other than `show w' and `show c'; they could even be mouse-clicks
+or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your school,
+if any, to sign a "copyright disclaimer" for the program, if necessary. Here
+is a sample; alter the names:
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision'
+(which makes passes at compilers) written by James Hacker.
+
+signature of Ty Coon, 1 April 1989 Ty Coon, President of Vice
diff --git a/LICENSES/GPL-3.0-only.txt b/LICENSES/GPL-3.0-only.txt
new file mode 100644
index 0000000..5990771
--- /dev/null
+++ b/LICENSES/GPL-3.0-only.txt
@@ -0,0 +1,604 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+Preamble
+
+The GNU General Public License is a free, copyleft license for software and
+other kinds of works.
+
+The licenses for most software and other practical works are designed to take
+away your freedom to share and change the works. By contrast, the GNU General
+Public License is intended to guarantee your freedom to share and change all
+versions of a program--to make sure it remains free software for all its users.
+We, the Free Software Foundation, use the GNU General Public License for most
+of our software; it applies also to any other work released this way by its
+authors. You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our
+General Public Licenses are designed to make sure that you have the freedom
+to distribute copies of free software (and charge for them if you wish), that
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+
+To protect your rights, we need to prevent others from denying you these rights
+or asking you to surrender the rights. Therefore, you have certain responsibilities
+if you distribute copies of the software, or if you modify it: responsibilities
+to respect the freedom of others.
+
+For example, if you distribute copies of such a program, whether gratis or
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+you must show them these terms so they know their rights.
+
+Developers that use the GNU GPL protect your rights with two steps: (1) assert
+copyright on the software, and (2) offer you this License giving you legal
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+
+For the developers' and authors' protection, the GPL clearly explains that
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+sake, the GPL requires that modified versions be marked as changed, so that
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+
+Some devices are designed to deny users access to install or run modified
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+versions of the GPL, as needed to protect the freedom of users.
+
+Finally, every program is threatened constantly by software patents. States
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+prevent this, the GPL assures that patents cannot be used to render the program
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+
+The precise terms and conditions for copying, distribution and modification
+follow.
+
+TERMS AND CONDITIONS
+
+0. Definitions.
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+“This License” refers to version 3 of the GNU General Public License.
+
+“Copyright” also means copyright-like laws that apply to other kinds of works,
+such as semiconductor masks.
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+“The Program” refers to any copyrightable work licensed under this License.
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+would make you directly or secondarily liable for infringement under applicable
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+Propagation includes copying, distribution (with or without modification),
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+
+An interactive user interface displays “Appropriate Legal Notices” to the
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+there is no warranty for the work (except to the extent that warranties are
+provided), that licensees may convey the work under this License, and how
+to view a copy of this License. If the interface presents a list of user commands
+or options, such as a menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+The “source code” for a work means the preferred form of the work for making
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+The Corresponding Source for a work in source code form is that same work.
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+All rights granted under this License are granted for the term of copyright
+on the Program, and are irrevocable provided the stated conditions are met.
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+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure
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+When you convey a covered work, you waive any legal power to forbid circumvention
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+4. Conveying Verbatim Copies.
+You may convey verbatim copies of the Program's source code as you receive
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+You may charge any price or no price for each copy that you convey, and you
+may offer support or warranty protection for a fee.
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+5. Conveying Modified Source Versions.
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+
+a) The work must carry prominent notices stating that you modified it, and
+giving a relevant date.
+
+b) The work must carry prominent notices stating that it is released under
+this License and any conditions added under section 7. This requirement modifies
+the requirement in section 4 to “keep intact all notices”.
+
+c) You must license the entire work, as a whole, under this License to anyone
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+with any applicable section 7 additional terms, to the whole of the work,
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+You may convey a covered work in object code form under the terms of sections
+4 and 5, provided that you also convey the machine-readable Corresponding
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+a physical distribution medium), accompanied by the Corresponding Source fixed
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+b) Convey the object code in, or embodied in, a physical product (including
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+
+d) Convey the object code by offering access from a designated place (gratis
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+“Installation Information” for a User Product means any methods, procedures,
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+If you convey an object code work under this section in, or with, or specifically
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+
+7. Additional Terms.
+“Additional permissions” are terms that supplement the terms of this License
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+that are applicable to the entire Program shall be treated as though they
+were included in this License, to the extent that they are valid under applicable
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+may be used separately under those permissions, but the entire Program remains
+governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any
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+
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+If a license document contains a further restriction but permits relicensing
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+and will automatically terminate your rights under this License (including
+any patent licenses granted under the third paragraph of section 11).
+
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+and (b) permanently, if the copyright holder fails to notify you of the violation
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diff --git a/LICENSES/LGPL-2.0-or-later.txt b/LICENSES/LGPL-2.0-or-later.txt
new file mode 100644
index 0000000..ec9eedc
--- /dev/null
+++ b/LICENSES/LGPL-2.0-or-later.txt
@@ -0,0 +1,444 @@
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diff --git a/LICENSES/LGPL-2.1-only.txt b/LICENSES/LGPL-2.1-only.txt
new file mode 100644
index 0000000..aaaba16
--- /dev/null
+++ b/LICENSES/LGPL-2.1-only.txt
@@ -0,0 +1,462 @@
+GNU LESSER GENERAL PUBLIC LICENSE
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+That's all there is to it!
diff --git a/LICENSES/LGPL-3.0-only.txt b/LICENSES/LGPL-3.0-only.txt
new file mode 100644
index 0000000..9e2e9f7
--- /dev/null
+++ b/LICENSES/LGPL-3.0-only.txt
@@ -0,0 +1,144 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license
+document, but changing it is not allowed.
+
+This version of the GNU Lesser General Public License incorporates the terms
+and conditions of version 3 of the GNU General Public License, supplemented
+by the additional permissions listed below.
+
+0. Additional Definitions.
+
+As used herein, "this License" refers to version 3 of the GNU Lesser General
+Public License, and the "GNU GPL" refers to version 3 of the GNU General Public
+License.
+
+"The Library" refers to a covered work governed by this License, other than
+an Application or a Combined Work as defined below.
+
+An "Application" is any work that makes use of an interface provided by the
+Library, but which is not otherwise based on the Library. Defining a subclass
+of a class defined by the Library is deemed a mode of using an interface provided
+by the Library.
+
+A "Combined Work" is a work produced by combining or linking an Application
+with the Library.  The particular version of the Library with which the Combined
+Work was made is also called the "Linked Version".
+
+The "Minimal Corresponding Source" for a Combined Work means the Corresponding
+Source for the Combined Work, excluding any source code for portions of the
+Combined Work that, considered in isolation, are based on the Application,
+and not on the Linked Version.
+
+The "Corresponding Application Code" for a Combined Work means the object
+code and/or source code for the Application, including any data and utility
+programs needed for reproducing the Combined Work from the Application, but
+excluding the System Libraries of the Combined Work.
+
+1. Exception to Section 3 of the GNU GPL.
+You may convey a covered work under sections 3 and 4 of this License without
+being bound by section 3 of the GNU GPL.
+
+2. Conveying Modified Versions.
+If you modify a copy of the Library, and, in your modifications, a facility
+refers to a function or data to be supplied by an Application that uses the
+facility (other than as an argument passed when the facility is invoked),
+then you may convey a copy of the modified version:
+
+a) under this License, provided that you make a good faith effort to ensure
+that, in the event an Application does not supply the function or data, the
+facility still operates, and performs whatever part of its purpose remains
+meaningful, or
+
+b) under the GNU GPL, with none of the additional permissions of this License
+applicable to that copy.
+
+3. Object Code Incorporating Material from Library Header Files.
+The object code form of an Application may incorporate material from a header
+file that is part of the Library.  You may convey such object code under terms
+of your choice, provided that, if the incorporated material is not limited
+to numerical parameters, data structure layouts and accessors, or small macros,
+inline functions and templates (ten or fewer lines in length), you do both
+of the following:
+
+a) Give prominent notice with each copy of the object code that the Library
+is used in it and that the Library and its use are covered by this License.
+
+b) Accompany the object code with a copy of the GNU GPL and this license document.
+
+4. Combined Works.
+You may convey a Combined Work under terms of your choice that, taken together,
+effectively do not restrict modification of the portions of the Library contained
+in the Combined Work and reverse engineering for debugging such modifications,
+if you also do each of the following:
+
+a) Give prominent notice with each copy of the Combined Work that the Library
+is used in it and that the Library and its use are covered by this License.
+
+b) Accompany the Combined Work with a copy of the GNU GPL and this license
+document.
+
+c) For a Combined Work that displays copyright notices during execution, include
+the copyright notice for the Library among these notices, as well as a reference
+directing the user to the copies of the GNU GPL and this license document.
+
+     d) Do one of the following:
+
+0) Convey the Minimal Corresponding Source under the terms of this License,
+and the Corresponding Application Code in a form suitable for, and under terms
+that permit, the user to recombine or relink the Application with a modified
+version of the Linked Version to produce a modified Combined Work, in the
+manner specified by section 6 of the GNU GPL for conveying Corresponding Source.
+
+1) Use a suitable shared library mechanism for linking with the Library. 
+A suitable mechanism is one that (a) uses at run time a copy of the Library
+already present on the user's computer system, and (b) will operate properly
+with a modified version of the Library that is interface-compatible with the
+Linked Version.
+
+e) Provide Installation Information, but only if you would otherwise be required
+to provide such information under section 6 of the GNU GPL, and only to the
+extent that such information is necessary to install and execute a modified
+version of the Combined Work produced by recombining or relinking the Application
+with a modified version of the Linked Version. (If you use option 4d0, the
+Installation Information must accompany the Minimal Corresponding Source and
+Corresponding Application Code. If you use option 4d1, you must provide the
+Installation Information in the manner specified by section 6 of the GNU GPL
+for conveying Corresponding Source.)
+
+5. Combined Libraries.
+You may place library facilities that are a work based on the Library side
+by side in a single library together with other library facilities that are
+not Applications and are not covered by this License, and convey such a combined
+library under terms of your choice, if you do both of the following:
+
+a) Accompany the combined library with a copy of the same work based on the
+Library, uncombined with any other library facilities, conveyed under the
+terms of this License.
+
+b) Give prominent notice with the combined library that part of it is a work
+based on the Library, and explaining where to find the accompanying uncombined
+form of the same work.
+
+6. Revised Versions of the GNU Lesser General Public License.
+The Free Software Foundation may publish revised and/or new versions of the
+GNU Lesser General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to address
+new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library as you
+received it specifies that a certain numbered version of the GNU Lesser General
+Public License "or any later version" applies to it, you have the option of
+following the terms and conditions either of that published version or of
+any later version published by the Free Software Foundation. If the Library
+as you received it does not specify a version number of the GNU Lesser General
+Public License, you may choose any version of the GNU Lesser General Public
+License ever published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide whether
+future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is permanent
+authorization for you to choose that version for the Library.
diff --git a/LICENSES/LicenseRef-KDE-Accepted-GPL.txt b/LICENSES/LicenseRef-KDE-Accepted-GPL.txt
new file mode 100644
index 0000000..60a2dff
--- /dev/null
+++ b/LICENSES/LicenseRef-KDE-Accepted-GPL.txt
@@ -0,0 +1,12 @@
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 3 of
+the license or (at your option) at any later version that is
+accepted by the membership of KDE e.V. (or its successor
+approved by the membership of KDE e.V.), which shall act as a
+proxy as defined in Section 14 of version 3 of the license.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
diff --git a/LICENSES/LicenseRef-KDE-Accepted-LGPL.txt b/LICENSES/LicenseRef-KDE-Accepted-LGPL.txt
new file mode 100644
index 0000000..232b3c5
--- /dev/null
+++ b/LICENSES/LicenseRef-KDE-Accepted-LGPL.txt
@@ -0,0 +1,12 @@
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 3 of the license or (at your option) any later version
+that is accepted by the membership of KDE e.V. (or its successor
+approved by the membership of KDE e.V.), which shall act as a
+proxy as defined in Section 6 of version 3 of the license.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
diff --git a/applet/contents/code/icon.js b/applet/contents/code/icon.js
index 03d9288..28cad6c 100644
--- a/applet/contents/code/icon.js
+++ b/applet/contents/code/icon.js
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 function name(volume, muted, prefix) {
diff --git a/applet/contents/config/config.qml b/applet/contents/config/config.qml
index 097117b..27cdcaf 100644
--- a/applet/contents/config/config.qml
+++ b/applet/contents/config/config.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/applet/contents/ui/ConfigGeneral.qml b/applet/contents/ui/ConfigGeneral.qml
index 7e2f313..625e46d 100644
--- a/applet/contents/ui/ConfigGeneral.qml
+++ b/applet/contents/ui/ConfigGeneral.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.5
diff --git a/applet/contents/ui/DeviceListItem.qml b/applet/contents/ui/DeviceListItem.qml
index 741b285..c27d688 100644
--- a/applet/contents/ui/DeviceListItem.qml
+++ b/applet/contents/ui/DeviceListItem.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/applet/contents/ui/Header.qml b/applet/contents/ui/Header.qml
index 7cb13ca..7511916 100644
--- a/applet/contents/ui/Header.qml
+++ b/applet/contents/ui/Header.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/applet/contents/ui/ListItemBase.qml b/applet/contents/ui/ListItemBase.qml
index 82970fa..7ac40fe 100644
--- a/applet/contents/ui/ListItemBase.qml
+++ b/applet/contents/ui/ListItemBase.qml
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.4
diff --git a/applet/contents/ui/SmallToolButton.qml b/applet/contents/ui/SmallToolButton.qml
index 07d2345..d331e89 100644
--- a/applet/contents/ui/SmallToolButton.qml
+++ b/applet/contents/ui/SmallToolButton.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2017 Chris Holland <zrenfire at gmail.com>
+    SPDX-FileCopyrightText: 2017 Chris Holland <zrenfire at gmail.com>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/applet/contents/ui/StreamListItem.qml b/applet/contents/ui/StreamListItem.qml
index 50461a4..0b7f078 100644
--- a/applet/contents/ui/StreamListItem.qml
+++ b/applet/contents/ui/StreamListItem.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/applet/contents/ui/main.qml b/applet/contents/ui/main.qml
index 9b68520..915f541 100644
--- a/applet/contents/ui/main.qml
+++ b/applet/contents/ui/main.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.2
diff --git a/cmake/FindCanberraPulse.cmake b/cmake/FindCanberraPulse.cmake
index 1392e78..3db7684 100644
--- a/cmake/FindCanberraPulse.cmake
+++ b/cmake/FindCanberraPulse.cmake
@@ -3,31 +3,9 @@
 #
 #  CanberraPulse_FOUND - true if the backend was found
 #
-# Copyright (c) 2019 Harald Sitter <sitter at kde.org>
+# SPDX-FileCopyrightText: 2019 Harald Sitter <sitter at kde.org>
 #
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-#    may be used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
+# SPDX-License-Identifier: BSD-3-Clause
 
 find_package(Canberra)
 
diff --git a/cmake/FindSoundThemeFreedesktop.cmake b/cmake/FindSoundThemeFreedesktop.cmake
index be35f97..b29f887 100644
--- a/cmake/FindSoundThemeFreedesktop.cmake
+++ b/cmake/FindSoundThemeFreedesktop.cmake
@@ -4,31 +4,9 @@
 #  SoundThemeFreeDesktop_FOUND - true if the sound theme is found
 #  SoundThemeFreeDesktop_PATH - path to the index.theme file
 #
-# Copyright (c) 2019 Harald Sitter <sitter at kde.org>
+# SPDX-FileCopyrightText: 2019 Harald Sitter <sitter at kde.org>
 #
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-# 1. Redistributions of source code must retain the above copyright
-#    notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above copyright
-#    notice, this list of conditions and the following disclaimer in the
-#    documentation and/or other materials provided with the distribution.
-# 3. Neither the name of the University nor the names of its contributors
-#    may be used to endorse or promote products derived from this software
-#    without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-# SUCH DAMAGE.
+# SPDX-License-Identifier: BSD-3-Clause
 
 find_file(SoundThemeFreeDesktop_PATH "sounds/freedesktop/index.theme"
     PATHS ENV XDG_DATA_DIRS /usr/local/share/ /usr/share/
diff --git a/doc/kcontrol/plasma-pa/index.docbook b/doc/kcontrol/plasma-pa/index.docbook
index 3d2e77e..0a28ec9 100644
--- a/doc/kcontrol/plasma-pa/index.docbook
+++ b/doc/kcontrol/plasma-pa/index.docbook
@@ -105,7 +105,7 @@ Configuration: This tab allows to set specific profiles to such as Analog Stereo
 &i18n-plasmapa;
 </para>
 <para>
-Program copyright 2014-2015 Harald Sitter
+Program SPDX-FileCopyrightText: 2014-2015 Harald Sitter
 </para>
 
 <para>
diff --git a/src/canberracontext.cpp b/src/canberracontext.cpp
index 95fb6a2..a22d8cf 100644
--- a/src/canberracontext.cpp
+++ b/src/canberracontext.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2018 Nicolas Fella <nicolas.fella at gmx.de>
+    SPDX-FileCopyrightText: 2018 Nicolas Fella <nicolas.fella at gmx.de>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "canberracontext.h"
diff --git a/src/canberracontext.h b/src/canberracontext.h
index 1c1c314..4c667fd 100644
--- a/src/canberracontext.h
+++ b/src/canberracontext.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2018 Nicolas Fella <nicolas.fella at gmx.de>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2018 Nicolas Fella <nicolas.fella at gmx.de>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 #pragma once
 
diff --git a/src/card.cpp b/src/card.cpp
index 42344b4..99e92d3 100644
--- a/src/card.cpp
+++ b/src/card.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "card.h"
diff --git a/src/card.h b/src/card.h
index 367c6fc..7d21067 100644
--- a/src/card.h
+++ b/src/card.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef CARD_H
diff --git a/src/client.cpp b/src/client.cpp
index f283b89..a421eb8 100644
--- a/src/client.cpp
+++ b/src/client.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "client.h"
diff --git a/src/client.h b/src/client.h
index 860fc3c..a0e1e44 100644
--- a/src/client.h
+++ b/src/client.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef CLIENT_H
diff --git a/src/context.cpp b/src/context.cpp
index 29eee0c..7732286 100644
--- a/src/context.cpp
+++ b/src/context.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "context.h"
diff --git a/src/context.h b/src/context.h
index b902289..dd6d753 100644
--- a/src/context.h
+++ b/src/context.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef CONTEXT_H
diff --git a/src/debug.cpp b/src/debug.cpp
index 73a8f97..f8300de 100644
--- a/src/debug.cpp
+++ b/src/debug.cpp
@@ -1,20 +1,7 @@
 /*  This file is part of the KDE project
-    Copyright (C) 2015 Bhushan Shah <bshah at kde.org>
+    SPDX-FileCopyrightText: 2015 Bhushan Shah <bshah at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
+    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "debug.h"
diff --git a/src/debug.h b/src/debug.h
index 7890170..15c481a 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -1,20 +1,7 @@
 /*  This file is part of the KDE project
-    Copyright (C) 2015 Bhushan Shah <bshah at kde.org>
+    SPDX-FileCopyrightText: 2015 Bhushan Shah <bshah at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-    Boston, MA 02110-1301, USA.
+    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef DEBUG_H
diff --git a/src/device.cpp b/src/device.cpp
index d36f3bd..940ac01 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "device.h"
diff --git a/src/device.h b/src/device.h
index 0a3a497..6cc463d 100644
--- a/src/device.h
+++ b/src/device.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef DEVICE_H
diff --git a/src/gconfitem.cpp b/src/gconfitem.cpp
index 3a6fea2..6c52a0e 100644
--- a/src/gconfitem.cpp
+++ b/src/gconfitem.cpp
@@ -1,24 +1,9 @@
 /*
- * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- * All rights reserved.
- * Copyright (C) 2016 David Edmundson <davidedmundson at kde.org>
- *
- * Contact: Marius Vollmer <marius.vollmer at nokia.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
+ * SPDX-FileCopyrightText: 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * SPDX-FileCopyrightText: 2016 David Edmundson <davidedmundson at kde.org>
+ * SPDX-FileContributor: Marius Vollmer <marius.vollmer at nokia.com>
  *
+ * SPDX-License-Identifier: LGPL-2.1-only
  */
 
 #include <QString>
diff --git a/src/gconfitem.h b/src/gconfitem.h
index aba5c76..0c5b07a 100644
--- a/src/gconfitem.h
+++ b/src/gconfitem.h
@@ -1,22 +1,10 @@
 /*
- * Copyright (C) 2009 Nokia Corporation.
- * Copyright (C) 2016 David Edmundson <davidedmundson at kde.org>
+ * SPDX-FileCopyrightText: 2009 Nokia Corporation.
+ * SPDX-FileCopyrightText: 2016 David Edmundson <davidedmundson at kde.org>
  *
  * Contact: Marius Vollmer <marius.vollmer at nokia.com>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  */
 
diff --git a/src/gsettingsitem.cpp b/src/gsettingsitem.cpp
index 67436c3..9aced62 100644
--- a/src/gsettingsitem.cpp
+++ b/src/gsettingsitem.cpp
@@ -1,19 +1,7 @@
 /*
- * Copyright (C) 2018 Nicolas Fella <nicolas.fella at gmx.de>
+ * SPDX-FileCopyrightText: 2018 Nicolas Fella <nicolas.fella at gmx.de>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  */
 
diff --git a/src/gsettingsitem.h b/src/gsettingsitem.h
index 56a39a3..e6d0cff 100644
--- a/src/gsettingsitem.h
+++ b/src/gsettingsitem.h
@@ -1,19 +1,7 @@
 /*
- * Copyright (C) 2018 Nicolas Fella <nicolas.fella at gmx.de>
+ * SPDX-FileCopyrightText: 2018 Nicolas Fella <nicolas.fella at gmx.de>
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * version 2.1 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  */
 
diff --git a/src/kcm/module.cpp b/src/kcm/module.cpp
index 5612309..074b67c 100644
--- a/src/kcm/module.cpp
+++ b/src/kcm/module.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "module.h"
diff --git a/src/kcm/module.h b/src/kcm/module.h
index d875730..ef11ea4 100644
--- a/src/kcm/module.h
+++ b/src/kcm/module.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef MODULE_H
diff --git a/src/kcm/package/contents/code/icon.js b/src/kcm/package/contents/code/icon.js
index 2526e50..0b47e5b 100644
--- a/src/kcm/package/contents/code/icon.js
+++ b/src/kcm/package/contents/code/icon.js
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 function name(volume, muted, prefix) {
diff --git a/src/kcm/package/contents/ui/Advanced.qml b/src/kcm/package/contents/ui/Advanced.qml
index de60cdb..149752f 100644
--- a/src/kcm/package/contents/ui/Advanced.qml
+++ b/src/kcm/package/contents/ui/Advanced.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/src/kcm/package/contents/ui/CardListItem.qml b/src/kcm/package/contents/ui/CardListItem.qml
index 2893508..eca6e11 100644
--- a/src/kcm/package/contents/ui/CardListItem.qml
+++ b/src/kcm/package/contents/ui/CardListItem.qml
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/src/kcm/package/contents/ui/DeviceComboBox.qml b/src/kcm/package/contents/ui/DeviceComboBox.qml
index 3292fe2..94dcfd0 100644
--- a/src/kcm/package/contents/ui/DeviceComboBox.qml
+++ b/src/kcm/package/contents/ui/DeviceComboBox.qml
@@ -1,23 +1,9 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-    Copyright 2020 David Redondo <kde at david-redondo.de>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+    SPDX-FileCopyrightText: 2020 David Redondo <kde at david-redondo.de>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.14
diff --git a/src/kcm/package/contents/ui/DeviceListItem.qml b/src/kcm/package/contents/ui/DeviceListItem.qml
index 3db0712..f3a34f4 100644
--- a/src/kcm/package/contents/ui/DeviceListItem.qml
+++ b/src/kcm/package/contents/ui/DeviceListItem.qml
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/src/kcm/package/contents/ui/MuteButton.qml b/src/kcm/package/contents/ui/MuteButton.qml
index 5e73287..19a00e5 100644
--- a/src/kcm/package/contents/ui/MuteButton.qml
+++ b/src/kcm/package/contents/ui/MuteButton.qml
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/src/kcm/package/contents/ui/StreamListItem.qml b/src/kcm/package/contents/ui/StreamListItem.qml
index 3b8bf8c..2667ce3 100644
--- a/src/kcm/package/contents/ui/StreamListItem.qml
+++ b/src/kcm/package/contents/ui/StreamListItem.qml
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.0
diff --git a/src/kcm/package/contents/ui/VolumeSlider.qml b/src/kcm/package/contents/ui/VolumeSlider.qml
index 5dc663c..53d8ee0 100644
--- a/src/kcm/package/contents/ui/VolumeSlider.qml
+++ b/src/kcm/package/contents/ui/VolumeSlider.qml
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
 
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.4
diff --git a/src/kcm/package/contents/ui/main.qml b/src/kcm/package/contents/ui/main.qml
index 1f570c5..41731be 100644
--- a/src/kcm/package/contents/ui/main.qml
+++ b/src/kcm/package/contents/ui/main.qml
@@ -1,24 +1,10 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-    Copyright 2019 Sefa Eyeoglu <contact at scrumplex.net>
-    Copyright 2020 Nicolas Fella <nicolas.fella at gmx.de>
-
-    This program is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of
-    the License or (at your option) version 3 or any later version
-    accepted by the membership of KDE e.V. (or its successor approved
-    by the membership of KDE e.V.), which shall act as a proxy
-    defined in Section 14 of version 3 of the license.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+    SPDX-FileCopyrightText: 2019 Sefa Eyeoglu <contact at scrumplex.net>
+    SPDX-FileCopyrightText: 2020 Nicolas Fella <nicolas.fella at gmx.de>
+
+    SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
 */
 
 import QtQuick 2.7
diff --git a/src/maps.cpp b/src/maps.cpp
index a4e7c29..186c56a 100644
--- a/src/maps.cpp
+++ b/src/maps.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "maps.h"
diff --git a/src/maps.h b/src/maps.h
index 2c6bdcf..264c07e 100644
--- a/src/maps.h
+++ b/src/maps.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef MAPS_H
diff --git a/src/module.cpp b/src/module.cpp
index 55889da..2eec530 100644
--- a/src/module.cpp
+++ b/src/module.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2017 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2017 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "module.h"
diff --git a/src/module.h b/src/module.h
index d429128..3e93a3f 100644
--- a/src/module.h
+++ b/src/module.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2017 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2017 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef MODULE_H
diff --git a/src/modulemanager.cpp b/src/modulemanager.cpp
index a43182e..bafc19d 100644
--- a/src/modulemanager.cpp
+++ b/src/modulemanager.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Edmundson <davidedmundson at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Edmundson <davidedmundson at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 
diff --git a/src/modulemanager.h b/src/modulemanager.h
index 291936e..3deb1c5 100644
--- a/src/modulemanager.h
+++ b/src/modulemanager.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Edmundson <davidedmundson at kde.org>
+    SPDX-FileCopyrightText: 2016 David Edmundson <davidedmundson at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef MODULEMANAGER_H
diff --git a/src/operation.cpp b/src/operation.cpp
index 62a4d5f..e2d509d 100644
--- a/src/operation.cpp
+++ b/src/operation.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "operation.h"
diff --git a/src/operation.h b/src/operation.h
index 0aa9ba7..ad399eb 100644
--- a/src/operation.h
+++ b/src/operation.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef OPERATION_H
diff --git a/src/port.cpp b/src/port.cpp
index 779e1f1..732eca9 100644
--- a/src/port.cpp
+++ b/src/port.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "port.h"
diff --git a/src/port.h b/src/port.h
index 86894b3..66a6e83 100644
--- a/src/port.h
+++ b/src/port.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef PORT_H
diff --git a/src/profile.cpp b/src/profile.cpp
index ec48db6..0a60deb 100644
--- a/src/profile.cpp
+++ b/src/profile.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "profile.h"
diff --git a/src/profile.h b/src/profile.h
index 3b8a55a..02aa234 100644
--- a/src/profile.h
+++ b/src/profile.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef PROFILE_H
diff --git a/src/pulseaudio.cpp b/src/pulseaudio.cpp
index 06f1dcd..a4a4114 100644
--- a/src/pulseaudio.cpp
+++ b/src/pulseaudio.cpp
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "pulseaudio.h"
diff --git a/src/pulseaudio.h b/src/pulseaudio.h
index 634660b..05a1a62 100644
--- a/src/pulseaudio.h
+++ b/src/pulseaudio.h
@@ -1,22 +1,8 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef PULSEAUDIO_H
diff --git a/src/pulseobject.cpp b/src/pulseobject.cpp
index 6b985d7..87fbc01 100644
--- a/src/pulseobject.cpp
+++ b/src/pulseobject.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "pulseobject.h"
diff --git a/src/pulseobject.h b/src/pulseobject.h
index 18d3dd4..3372a34 100644
--- a/src/pulseobject.h
+++ b/src/pulseobject.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef PULSEOBJECT_H
diff --git a/src/qml/globalactioncollection.cpp b/src/qml/globalactioncollection.cpp
index 38ffd78..563329f 100644
--- a/src/qml/globalactioncollection.cpp
+++ b/src/qml/globalactioncollection.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "globalactioncollection.h"
diff --git a/src/qml/globalactioncollection.h b/src/qml/globalactioncollection.h
index 7cd6530..dcc0151 100644
--- a/src/qml/globalactioncollection.h
+++ b/src/qml/globalactioncollection.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef GLOBALACTIONCOLLECTION_H
diff --git a/src/qml/listitemmenu.cpp b/src/qml/listitemmenu.cpp
index 3b4ddfd..db536b4 100644
--- a/src/qml/listitemmenu.cpp
+++ b/src/qml/listitemmenu.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2021 Kai Uwe Broulik <kde at broulik.de>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2021 Kai Uwe Broulik <kde at broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "listitemmenu.h"
diff --git a/src/qml/listitemmenu.h b/src/qml/listitemmenu.h
index 9b09d82..a6abb4c 100644
--- a/src/qml/listitemmenu.h
+++ b/src/qml/listitemmenu.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2021 Kai Uwe Broulik <kde at broulik.de>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2021 Kai Uwe Broulik <kde at broulik.de>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #pragma once
diff --git a/src/qml/microphoneindicator.cpp b/src/qml/microphoneindicator.cpp
index 67db714..afd0c51 100644
--- a/src/qml/microphoneindicator.cpp
+++ b/src/qml/microphoneindicator.cpp
@@ -1,23 +1,9 @@
 /*
-    Copyright 2019 Kai Uwe Broulik <kde at privat.broulik.de>
-    Copyright 2020 MBition GmbH,
+    SPDX-FileCopyrightText: 2019 Kai Uwe Broulik <kde at privat.broulik.de>
+    SPDX-FileCopyrightText: 2020 MBition GmbH
         Author: Kai Uwe Broulik <kai_uwe.broulik at mbition.io>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "microphoneindicator.h"
diff --git a/src/qml/microphoneindicator.h b/src/qml/microphoneindicator.h
index 0463768..7764419 100644
--- a/src/qml/microphoneindicator.h
+++ b/src/qml/microphoneindicator.h
@@ -1,23 +1,9 @@
 /*
-    Copyright 2019 Kai Uwe Broulik <kde at privat.broulik.de>
-    Copyright 2020 MBition GmbH,
+    SPDX-FileCopyrightText: 2019 Kai Uwe Broulik <kde at privat.broulik.de>
+    SPDX-FileCopyrightText: 2020 MBition GmbH
         Author: Kai Uwe Broulik <kai_uwe.broulik at mbition.io>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #pragma once
diff --git a/src/qml/plugin.cpp b/src/qml/plugin.cpp
index a6de38a..51ce832 100644
--- a/src/qml/plugin.cpp
+++ b/src/qml/plugin.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "plugin.h"
diff --git a/src/qml/plugin.h b/src/qml/plugin.h
index 3374a99..3213916 100644
--- a/src/qml/plugin.h
+++ b/src/qml/plugin.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef PLUGIN_H
diff --git a/src/qml/volumefeedback.cpp b/src/qml/volumefeedback.cpp
index 69bc260..245b186 100644
--- a/src/qml/volumefeedback.cpp
+++ b/src/qml/volumefeedback.cpp
@@ -1,22 +1,8 @@
 /*
-    Copyright 2008 Helio Chissini de Castro <helio at kde.org>
-    Copyright 2016 David Rosca <nowrep at gmail.com>
+    SPDX-FileCopyrightText: 2008 Helio Chissini de Castro <helio at kde.org>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "volumefeedback.h"
diff --git a/src/qml/volumefeedback.h b/src/qml/volumefeedback.h
index 27263c9..32f7b0c 100644
--- a/src/qml/volumefeedback.h
+++ b/src/qml/volumefeedback.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef VOLUMEFEEDBACK_H
diff --git a/src/qml/volumeosd.cpp b/src/qml/volumeosd.cpp
index 5e20b7d..01f7ad0 100644
--- a/src/qml/volumeosd.cpp
+++ b/src/qml/volumeosd.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "volumeosd.h"
diff --git a/src/qml/volumeosd.h b/src/qml/volumeosd.h
index fa8f5c1..e783c11 100644
--- a/src/qml/volumeosd.h
+++ b/src/qml/volumeosd.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef VOLUMEOSD_H
diff --git a/src/server.cpp b/src/server.cpp
index 602c05d..4a63028 100644
--- a/src/server.cpp
+++ b/src/server.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "server.h"
diff --git a/src/server.h b/src/server.h
index bf896d7..553568f 100644
--- a/src/server.h
+++ b/src/server.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef SERVER_H
diff --git a/src/sink.cpp b/src/sink.cpp
index 93e664d..71235db 100644
--- a/src/sink.cpp
+++ b/src/sink.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "sink.h"
diff --git a/src/sink.h b/src/sink.h
index 3d8f9db..62f6a72 100644
--- a/src/sink.h
+++ b/src/sink.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef SINK_H
diff --git a/src/sinkinput.cpp b/src/sinkinput.cpp
index 818ad8b..bf20560 100644
--- a/src/sinkinput.cpp
+++ b/src/sinkinput.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "sinkinput.h"
diff --git a/src/sinkinput.h b/src/sinkinput.h
index 85613f4..db119b0 100644
--- a/src/sinkinput.h
+++ b/src/sinkinput.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef SINKINPUT_H
diff --git a/src/source.cpp b/src/source.cpp
index 9894137..b3a4f29 100644
--- a/src/source.cpp
+++ b/src/source.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "source.h"
diff --git a/src/source.h b/src/source.h
index 3f47789..3e84b19 100644
--- a/src/source.h
+++ b/src/source.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef SOURCE_H
diff --git a/src/sourceoutput.cpp b/src/sourceoutput.cpp
index 1f1572a..910fc43 100644
--- a/src/sourceoutput.cpp
+++ b/src/sourceoutput.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "sourceoutput.h"
diff --git a/src/sourceoutput.h b/src/sourceoutput.h
index d17922d..4513483 100644
--- a/src/sourceoutput.h
+++ b/src/sourceoutput.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef SOURCEOUTPUT_H
diff --git a/src/stream.cpp b/src/stream.cpp
index 0150d39..3efa604 100644
--- a/src/stream.cpp
+++ b/src/stream.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "stream.h"
diff --git a/src/stream.h b/src/stream.h
index 0aa1a5c..2df8b52 100644
--- a/src/stream.h
+++ b/src/stream.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef STREAM_H
diff --git a/src/streamrestore.cpp b/src/streamrestore.cpp
index 97afe94..13a863c 100644
--- a/src/streamrestore.cpp
+++ b/src/streamrestore.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "streamrestore.h"
diff --git a/src/streamrestore.h b/src/streamrestore.h
index d6c5539..5d1033e 100644
--- a/src/streamrestore.h
+++ b/src/streamrestore.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2016 David Rosca <nowrep at gmail.com>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2016 David Rosca <nowrep at gmail.com>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef STREAMRESTORE_H
diff --git a/src/volumemonitor.cpp b/src/volumemonitor.cpp
index 604104b..a25b3bf 100644
--- a/src/volumemonitor.cpp
+++ b/src/volumemonitor.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2020 David Edmundson <davidedmundson at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "volumemonitor.h"
diff --git a/src/volumemonitor.h b/src/volumemonitor.h
index 926f558..0a37ff8 100644
--- a/src/volumemonitor.h
+++ b/src/volumemonitor.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2020 David Edmundson <davidedmundson at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2020 David Edmundson <davidedmundson at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #pragma once
diff --git a/src/volumeobject.cpp b/src/volumeobject.cpp
index 9eb565b..13147f5 100644
--- a/src/volumeobject.cpp
+++ b/src/volumeobject.cpp
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
 
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "volumeobject.h"
diff --git a/src/volumeobject.h b/src/volumeobject.h
index c471b7c..26050c5 100644
--- a/src/volumeobject.h
+++ b/src/volumeobject.h
@@ -1,21 +1,7 @@
 /*
-    Copyright 2014-2015 Harald Sitter <sitter at kde.org>
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) version 3, or any
-    later version accepted by the membership of KDE e.V. (or its
-    successor approved by the membership of KDE e.V.), which shall
-    act as a proxy defined in Section 6 of version 3 of the license.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+    SPDX-FileCopyrightText: 2014-2015 Harald Sitter <sitter at kde.org>
+
+    SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #ifndef VOLUMEOBJECT_H


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