11.1 32-bit with KDE 3.5
Gest sounds from system, Amarok, and smplayer, just not in Flash,
whether with video or without, as on this Flash audio test page:
http://www.musicofnature.com/songsofinsects/flashtest/index.html
In the process of resolving a series of missing dependencies for audio
software, I found that Flash audio would play on YouTube, but this
capability did not remain following a reboot. To me, this would seem to
suggest some sort of conflict rather than lack of a necessary plug-in,
but I wouldn’t bet money on it.