Everything is running great on XP with boot camp except getting sound through my speakers. I have some crappy harman/kardon speakers that I have plugged into the optical out port on the back of my intel iMac, I went into the Sigma Tel settings and confirmed something was plugged into them but sound still does not go through. Now I don't have them plugged in exactly flush but they work this way in OSX so I'm not too sure what is going on. Any help?