This afternoon I was talking to a friend, telling him how good Garageband was and how Apple is the superior brand of computers. He wants to see a demonstration of Garageband. I plug in my Griffin iMic. Plug in my guitar and start Garageband. When I play the instrument, no sound comes from the speakers. I go to system prefs---->sound, and check the audio input. Sure enough, the computer is recognizing the iMic, and when I pick the guitar you can see that the computer is hearing the guitar, but no noise comes from the speakers. Puzzled, I open iTunes to see if a song will play. The song starts, but no music from the speakers. Really dumbfounded and embaressed, I restart the computer. Upon restart, I get familiar start-up "bong" as I call it. But after restart, still no music. So now I don't know what to do. I logged in as a different user and still no music. Does anybody have any idea what I should try. This has happened to me once before. Not 30 minutes before I was listening to music from the machine. I will say, things worked before I plugged in the iMic. Although this may just be a coincidence! Any help would be greatly appreciated!!!