I found a WinAmp plugin called WebAmp. It adds a web server to WinAmp that allows you to control WinAmp from any browser. The only drawback is that it only seems to work with WinAmp2, not WinAmp3 (yet).
So I downloaded and installed WinAmp2 on my desktop, added in WebAmp, and configured WebAmp to look in my Music directory. Went to the Axim, pointed IE at the desktop, and instant HTML interface to WinAmp. Click, click, music. From anywhere in the house.
Next month we go to the 12 hours of Sebring with the big old RV and set up the amps, speakers and the notebook full of techno MP3s. This time I can walk anywhere in the area and control the music from the Axim. Cool.
WebAmp at
www.ulfco.com/webamp
Dave