iTunes doesn't playback

I recently tried to use a rocketfish bluetooth headset on my PC. It worked fine, except some minor problems switiching between it and my speakers. I removed the headset from my computer, and everything returned to normal. Except iTunes, which won't playback. it simply stays at 0:00 when I attempt to play anything. I've tried reinstalling, checking my settings, updating drivers, removing sound enhacement, and reinstalling itunes. Still no luck. The rest of the sounds work fine. It's just iTunes that won't. Any suggestions?