@dansawyer
This is the way I got playlists on the Z:
0. On the big box, I have a bunch of album directories. I keep a flat, wide structure, with directory names containing both the artist and the album name. No genres.
1. Next to those directories, I created a directory called "playlists".
2. In desktop XMMS, I created one playlist per album directory, placing all of them in the "playslists" directory. I used the .m3u format.
3. As .m3u files are plaintext, I hand-edited each one to change all links from absolute to relative (i.e. from /my/music/artist-album/song.mp3 to ../artist-album/song.mp3). I wish XMMS had a switch somewhere to make playlists with relative links.
4. I copied selected album directories and the "playlists" directory to a partition on my CF card.
5. On the Z in XMMS, I tap "Add", then navigate to the "playlists" directory and choose a playlist. That's it.
6. Removing songs from XMMS is unintuitive: tap "Sub", choose the songs you want removed (drag if necessary) and tap "Sub" again.
z.