well as usual when i upgrade my itunes i end up losing all my music when i plug in my ipod because i forget to turn off automatic sync. Anyway lost all my tunes which were mp3 at 190 so i decided to try this new format at 160 and started popping in all my cd's not even listening to them, well i just started listening and this new format is terrible nothing compared to my mp3's at 190 also during songs i hear the volume going up and down. Richard