I can play music fine, no problems, I can play older games no problems with the sound. My only problems are the three 3D games I have on the computer K1, K2, and Bloodlines. Bloodlines has always had that problem since day one when I installed it. The kotors just started to do it.
I have WinXP Media edition on that computer.
On my other computer I have the same soundcard but use WinXP Home, have the same games installed and I don't have problems with the sound on this computer.