I wouldn't mind the default player, however it doesn't play ogg, which is just silly (and has been discussed elsewhere).

If anyone knows how to make it play ogg vorbis files (particularly the OS 2008 version - I've decided to leave that on my N800 in the end), I'd love to know.

Otherwise, I may code up a player in Python and use mplayer as a backend, or perhaps mpd. Both will play ogg vorbis files (and virtually any other music format) with very low CPU usage.

For the time being I'm using mmpc and mpd (running on the tablet). It has some challenges when changing playlists (the mmpc interface needs some work) but its very usable for my purposes, which tend to be:

- start up playing a large playlist (1000's)
- put it on random
- leave it alone

Folder-based playing should be a feature in all players but isn't. An ideal player would allow me play all music in a directory and subdirectories with a minimum of clicks and also of course allow for easy selection of playlists.

I could do without album covers and the like. Optional on the fly (but cached) lyric lookups on the other hand would be handy from time to time.

(edit, more detail added)