Hello all ... I too am having trouble with the WINMM WDM audio. I'm not sure why it is showing up, and I can probably tell the story if you want. Anyway, I have an AMD Sempron CPU and motherboard (barebones kit) and the built in sound is AC'97. According to Computer/manage/device, that is OK. I do have a yellow bang by several of the other devices. I have tried to uninstall and then reinstall my AC'97. That installs OK. The minute I try to use Winamp, it says it has detected the WINMM stuff. It is my understanding from a little reading that this is not needed in XP. In fact, XP says this is old stuff. I have downloaded Everest and have run it. What info do you need from that for you to help me? I hope you can help me!!! The sound did work a while back. I did have a crash when plugging in a USB memory card reader into the front USB plug. I think things have gone south from that point on. The USB on the back is working fine. I have unplugged the front USB for now. Anyway, if there is more to know, ask me.