Upgraded one of my older macs to Lion and the "mac-side" is working perfectly. I also took the opportunity to install windows 7 x64 via bootcamp and I can't seem to get sound to work even after I installed the bootcamp 4.0.4 support package. Any ideas? I see a red light coming out of the jack. The jack works just fine in the mac side. Therefore, it has to be a driver problem. Thanks