I don't listen to anything on my GP2X. That takes up space that could be used for games. I have an iPod for music, and there's a little bit of everything on it.
Imo, the gp32 (in my case, but gp2x is almost as big i think) is way too big for me h34r: i rather use my little portable 256MB mp3 player, and most of the time i'm hearing soul food rap