I've tried installing Boot Camp from my Leopard DVD (Win 7 didn't like either of my mac pro's discs), installing the Boot Camp 2.1 update, and removing all audio devices and forcing Windows to search for new drivers. Anyone know what's going on? I was previously running Vista, but I heard games run better under Windows 7, and it was time to wipe the drive fresh anyway, so I thought I'd give it a shot. Any help so I don't have to roll back to Vista would be much appreciated. Update: This is even stranger. Turns out audio *is* working, but it is incredibly faint. I'm cranking volume up on my external speakers far beyond anything I would regularly listen to, and I can barely hear streaming music from sites like Lala or Last.fm. I checked the volume mixer and all my levels are up at 100, it's like there is some kind of extremely low audio level limit being enforced before it gets out to the hardware. Halp?