I found a solution to this, even though I still have the delayed sound problem
I'm running 10.0 CE using KDE.
Sound Card is a Audigy 1
In the KDE desktop configuration menu, under Sound/Sound System, make sure you have the Sound server enabled (enable Sound System checked)
Apply settings, and now start et like this:
In Console type:
artsdsp -m et
this will start et, and worked for me to get sound.
I now have delayed sound, which some people were able to fix by turning off/on the Full Duplex function in the Sound System manager of KDE
