I bought one of those chinese ipod Nano mp4 knock offs for $36 just to see if it worked. I loaded about 3GB onto the unit. each song would play, but not advance. When I looked at the display I was seeing for example 'Song -Artist.mp3' but it was followed by '.Song -artist.mp3' which I figured out was the way the mp4's DOS read the OS X generated mp3— to the player the '.Song -artist.mp3' is superfulous.

I just used Hidden Cleaner - 1.1.1— And voila! All those superfulous '.Song -artist.mp3' files were gone, and each song flows the way it should. Tres magnifique!

Sorry to read about keeari's experience though. That would certainly upset me.

But for me the results were perfect.