in win2k3 you have to go to your advanced audio properties and crank up the slider to accelerate audio. By default it's very low, same with video in the advanced section of your display properties to get the speed that xp cant compete with in apps =D
When I accelerated the audio, the hiss went away.
Also, if your running win2k3, you should run dxdiag and click through the tabs and enable all the agp stuff to get games running super smooth and quick.
That's the major stuff from turning win2k3 from a server os into a workstation. And yes, I did say when it's converted, it's much faster than XP, with xpthemes on or off.
