I have a 4th Generation IPOD (20GB) which I use with a Logitech Speaker Dock (hate having things stuck in my ears).
On the IPOD I have MP3 version of Masters of Classical Music which I converted from FLAC using FOOBAR 2000.
The puzzle I have is that the whole setup shuts down sporadically when playing tracks from this set.
I have tried moving tracks to different playlists but it makes no difference.
Problem occurs with different tracks, and so far I have been unable to pinpoint any specific track or tracks as being central to the problem.
The problem does not occur with any other tracks.
I don't think it is related to the Logitech Speaker Dock since I had this replaced because of this problem.
The replacement unit fared no better than its predecessor.

Any ideas anyone??