Install one of the X distros (pdaxrom) as a base, then port as much Maemo over to it as you can. I'd love to see maemo running on the Zaurus clamshell models.

Second thing, I found a front-end shoutcast client for the Zaurus on a Japanese site, it's written in ruby. Seems too work fairly good, but some of the buttons and messages are in japanese. It's fairly straight forward though to cut-n-paste them into google translations, to get a rough translation going though.