netJukebox is a very nice looking i'd say all-in-1 solution for sharing your winamp playlist and music collection with others.
It has an enormous list of functions.
But there are also some not so perfect things like the fact that it might take a while before you actualy managed to get it running. You need Apache, PHP, MySQL, WinAmp, httpQ for winamp, and some knowledge. Also the names of the mp3 files have to be correct.
After all it's realy worth the effort.
Even I managed to get it working :).