I need to get around to doing this sometime soon with my iPaq. Last time I looked into it, we had Displayserver, but no Java solution for the iPaq. I did run across one recently that I will have to test, but VNC should be nice as well.

Though the biggest use will probably be implemented with just HTML. That use is easy switching between a few different playlists quickly. Though I'd have to hook the empeg up to the network somehow when I plan on using this solution.