kmix DCOP call return values wrong?

[David Jarvie]

KAlarm uses KMix to set the master volume when sounds are played with its 
alarms. But when I use it with KMix from kdemultimedia 3.3.2 (built from 
source), it doesn't work. I find that the masterVolume() DCOP call to kmix 
always returns 0, and the setMasterVolume() DCOP call never changes the 
volume regardless of what value is supplied as a parameter.

This used to work (I'm not sure which version of kmix). I tested it out with 
kdcop as well, which confirms that 0 is always returned. Note that sound 
works fine on my system, and if I use the kmix graphical interface to adjust 
the volume, that works correctly. But the DCOP call still returns 0.

What has happened here? And will it work in KDE 3.4? (I haven't installed 
kdemultimedia for KDE 3.4 yet to test it out.)

Cheers,
David.
KAlarm author.