SonicSwap iTunes plug-in
SonicSwap lets you post your music and playlist collections on the net, and gives you and your friends access to play your music legally over the internet. This is the first site that automatically turns your iTunes playlists into youTube video playlists. If you have a lot of the same music your friends do, you can download their playlists. We install them in iTunes, and any tracks you have will be added to the playlist automatically.
The SonicSwap iTunes plug-in is a software accessory that runs in parallel with iTunes to enhance your digital music experience and connect you with friends. The plug-in automatically keeps your SonicSwap account in sync with your growing music collection and listening habits, so you can add a “Now Playing Box” to your profile on mySpace or your blog.
Download: SonicSwap iTunes plug-in