Archos Player Problems, Any help here?

So my GF has an ARCHOS music player and I encoded some songs with iTunes and burned them to a CD and gave them to her. The songs are mp3 id2.2 192kbps (nothing unusual there). But when she plays the songs on her player the thing just shuts off. Now the real kicker is that some of the songs work, and some don't.

She is using XP on a Toshiba, I revealed the invisible files that OS X placed on the drive and erased them. But no luck still. It's odd how the Archos just shuts off.

(I'd tell her to get an iPod, but I don't need to start fights with her).

EDIT: When I burned the mp3's to a CD I did it through the Finder, not through iTunes.