We actually hadn't played for a while but just fired the game up tonight, and the microphone isn't working. It's the official mic (says Rockband on it). There is no power switch. The mic works fine with our Mac, so I don't believe there is anything wrong with the mic. We use to be able to play Lego Rockband with this mic just fine, but tonight, nothing I've done has helped. It's not picking up any sound from the mic. Further, I tried another USB mic (a Konami game mic) and it didn't work either. We do have a controller plugged in and neither mic has a power switch. Any help would be appreciated.