It seems the new itunes messed up the quality of my backspeakers..I'm not 100% sure if its itunes but i dont know what else it could be. stereo files work find but it seems joint-stereo files r missing sounds when it comes to the back left and right speaker.. is there anyway to revert back to the last version i had to see if thats the problem? if this is a problem I just havent noticed before is there another way to get 5.1 sound without a firewave?