When I play the piano lessons on my MacBook Pro running Mountain Lion 10.8.1, the piano lessons even with my piano and everything connected and even without, I cannot hear the lesson at all. Subtitles work, but I really need to hear the lesson to learn properly. Any way to fix this? 
UPDATE: Fixed it. GarageBand output was switched to AirPlay... 0.0
UPDATE: Fixed it. GarageBand output was switched to AirPlay... 0.0
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