I haven't set mine up yet, so I'm not sure how easy it is, but it sounds promising.
Here's what their website has to say:
MyTunesRSS allows you to access the music and videos from your iTunes library or any simple watch folder over a local network or even the internet. You can access your music from all over the world using a simple web browser. The user interface lets you search for titles or browse your whole library by album, artist or genre. You can access your iTunes playlists or create new ones directly in MyTunesRSS. You can even create smart playlists which get updated automatically with tracks from your library matching the smart playlist criteria. Add YouTube videos to your database. This does not add the videos themselves but only the meta information. The YouTube videos appear in the web interface just like all local tracks but they are fetched seamlessly from YouTube for playback
You need a twitter account or set one up..