Wow! Awesome job, especially for 2005. Do you have the code anywhere? Do you mind if I add you to the "predecessors" section of my readme? https://github.com/captbaritone/winamp2-js#predecessors
This being 2005, the code is pretty much what you see there -- no minification or anything. The source archive contains the template files (this project was done as a skin for BrowseAmp, a plugin which added a web server to Winamp to allow remote control of it).