here's a link to CNET's roundup of some smaller capacity (2GB or less) players that take regular AAA batteries:
If you're looking for something with a larger capacity (30 GB or larger) with a removeable li-ion battery:
Archos 604 or 604wifi (the newer Gen 5 players do not have a removeable battery)
or Creative Zen Vision W
I want a mp3 more to use at home than on the move. Our 5 disk cd changer died and I thought it may be better to get a mp3 and docking station than new cd player. I want to be able to just play one group of music from several cds sometimes and a mix of all my music other times, i.e. just Christmas songs or all songs. Is this possible on a unit that you can change the batteries, instead of having to send to unit back when the battery dies?