Wonderful! I just discovered that XBMC is not the only thing without audio, everything is. After attempting to play an audio file in Amarok, when that failed, I cross-checked in VLC, and it is mute also. I then checked in Phonon, and there are now 3 devices are listed, instead of the two as when the audio worked, but the first one is grayed out, pretty much like it was in the old installation of Kubuntu. None of them produce any sound using the test button. Since I haven't made any hardware changes...other than disconnecting the optical drives, which shouldn't have anything to do with this, and I haven't made any changes related to the sound card or it's drivers, the only thing that I can think of that might be a causal factor is the running of XBMC. I only say that, because that is when I first became aware of any audio problem. It is these kind of things that have discouraged me in the past, because I'm not qualified to deal with them on my own.