A lot of Bob Dylan albums are now being released in SACD (Super Audio CD) with 5.1 sound. I would love to buy these but I don't want to buy a SACD-player as I now use my iPod for everything (connected to my home stereo). I don't care much about the higher sampling rate of SACD, but the 5.1 sound would be amazing. Any guess if a new version of iPod (and iTMS) will support this in the future? I think I've heard somewhere that it's already supported in AAC.