FstFwd is a project mainly written in JAVASCRIPT and RUBY, it's free.
A music based Rails App. Supply a song and the extension spits back a link. Uses Grooveshark, Last.fm, Spotify.
OVERVIEW:
A website designed to transform your streaming music links into a link for Youtube, Rdio, Spotify, Last.fm and Grooveshark.
Built with Rails3 and MongoDB.
![UI] (https://img.skitch.com/20110911-1pg3n6m4qdacj7t32133wqyx6c.jpg "UI")