Goombah

Goombah is an intriguing new application/service that examines your iTunes music library and compares it with other users’ libraries. It then recommends tracks that you might like and lets you listen to them using the iTunes Music Store.

• You should know that other Goombah users can browse the entire contents of your music library, including play counts and ratings (but not comments).
• It’s not clear to me how it knows which of the music in my library I like. For instance, two of the top four tracks it recommended to me were Carmen and Wagner, although I have not rated or played any classical music since starting my current iTunes library.
• Most of the recommended tracks are not (yet) available at the iTunes Music Store.
• It would be great if a future version could let me rate the recommended items, as Amazon does.
• It’s written using PyObjC.