I don't know if this is even possible, but I'd really like some way to fool iTunes into thinking my Z is an iPod.
SNIP!
Somewhat off topic, but I'd be really happy with an mp3 player for the Z that has some of the features of an iPod, even without access to the same content. Important features missing from the Z's mp3 players that I've tried (xmms, mediaplayer, mediaplayer2, and something else...) are:
1. Random play
2. Sort/Select/Play by categories (genre, artist, preferred, least played, most etc.)
3. Saved playlists (ie, last played, high preference/low preference, genre, etc.)
stored on (or associated with) different media. For example, I store music on CF
cards, and it would be great if each card had it's own info, rather than just a single
playlist organized by song title (ie., directory listing)
4. The ability to lock the keys, so that the arrow keys don't change the volume/song
accidently.
5. Repeat (by playlist, not by individual song).