I just got a 15" Powerbook G4 Superdrive, and I can't seem to make the internal mic work. I select it has the desired audio device under System Preferences, but both Logic Express and Garage Band just record static. Any suggestions? I just got it yesterday, it is my first mac and I'm having a lot of fun with it, but I hope I won't need to send it out for repair. I was going to call apple but I figured I might as well try a forum first. Thanks a bundle.