If they are iTunes files–.m4a or .aac–they are not going to play on the Fuze. You need to convert them to .mp3.You can do that in iTunes.
If they were mp3 converted by MAC OSX your album folder will have both the songs and some finder files–0kb files with names like 01._track1.mp3. There’s nothing to play in those files–they are just bookmarks.
