Phonon and audio systems in general
Sound works for me in KDE, so there's no pressing problem that needs
solving. However, my understanding of how and why things work is rather
limited. KDE apps use phonon for sound, which uses a xine-based backend
to output sound to ALSA.
Apparently, apart from the xine-backend, there are others (gstreamer,
pulseaudio?). I have no idea what reasons there might be for choosing
one over the others.
Also, since I've become aware of phonon, I've been wondering whether
it's only relevant for applications that have been developed with it
explicitly in mind, or, say, whether there's a way to output sound from
any app to a virtual phonon device for Notifications, Music, or
Communication and have phonon route it to the real device selected in
the Sound and Video Configuration.
As for the Debian-connection: Is there any preferred way for audio on