Nokia Music (on Vista):
Most of my music collection is made up of mostly DRM-FREE 256 kbps AAC iTunes tracks. These are the new DRM-FREE ITUNES PLUS TRACKS, NOT THE OLD DRM TRACKS!!!! (Please take note of this because I know that the protected tracks cannot be played, but I am sure that my tracks are the iTunes Plus, DRM-free tracks). Every time I try to play these DRM-free tracks in the Nokia Music PC Application, the tracks are skipped through and do not play properly. (I do not mean like normally skipping, I mean that the tracks play for about 3 seconds each). I think this could be due to the 256 kbps bitrate of the AAC tracks. I hope that Nokia will be able to fix this bug in the next update.

This happens when you try to play DRM-FREE 256 kbps AAC (from iTunes).