I opened a couple of the songs I created with Garageband '05 (I believe) on my older Mac in Garageband '09 on my new MBP, and although I expected some incompatibility, I sure didn't expect the awful sounds I heard! In other words, '09 isn't rendering most tracks the way I created them with '05. Is there a workaround for this or is everything I created using '05 now junk?