I'm making steady progress with this. I've got the basic playback screen and "queue and play" mode (Queue, By Artist, etc.) going. Next up is jukebox mode.

It's based around a 240 pixel screen width (as per Jerz' suggestion). There is no playback timer or auto-refresh - you'll have to press the refresh button as needed.

I've decided against javascript and frames because I'm not sure that older pdas support these. But as I'm using XSL stylesheets to produce the html, it'll be possible to customise these to use javascript etc.

Cheers
Paul