GrooveTube
An ITunes style music player sourcing music from Youtube
GrooveTube is a mashup of several APIs. It gives you an ITunes style desktop music player, but without having to have any of the music on your desktop.
Music is organised by artists, albums and songs in the same way as any other desktop music player. Just type in a new artist and it's as though you instantly have all their albums available to listen to.
GrooveTube will first search your Music directory for the given song and play it if available. But if the song isn't available...