How play part of a sound file?

[Erik]

I need to play a part of a sound file, for example from 3000 ms to 8000
ms. I looked at the documentation at
[http://developer.kde.org/documentation/library/cvs-api/kdelibs-apidocs/phonon/html/classPhonon_1_1AudioPlayer.html]
without finding what I was looking for. There is "void seek (qint64
ms)", so I suppose I could call "seek(3000); play()" but that does not
tell it to stop at 8000 ms.