Audicity is a freeware music program I downloaded., I'm using an iBook G4, OSX of course. I can't figure out how to get the built-in mic to work. There's a chance the mic on this computer is busted actually. Does anyone know: (1) how to test the built in mic on an iBook? (2) What kind of USB mic might work? Which will probably be a better mic anyway, am I looking at $10 or $100 or what?