I just had this problem with an album from a friend’s hard drive.
When I pushed the << or >> button, it just sat there for long seconds and sometimes didn’t change to the next track at all.
I had already run the tags through my usual mp3tag , ID3v2.3 ISO-8859-1 (and virus-checker too) so that wasn’t the problem. However, there was an image in each of the files that the basic mp3tag view didn’t show.
I took a closer look. Under View in mp3tag you can switch from the usual Tag Panel to Extended Tags. (You have to highlight the files.)
It turned out each file had a pretty big copy of the album cover in it. If you do see the album cover, there are icons to the right. You can Extract it–which puts one image of the cover in the folder as folder.jpg, which the Fuze should display–and then hit the X icon and delete the cover from all the individual files.
Anyway if you’re experiencing long gaps in playback on a particular album, and the Fuze just seems sluggish, look for those imbedded images. It’s worth a try.