This is a pretty cool solution; although I am getting a LOT of false positives. Could that have something to do with my hand-tagged MP3s?
(shameless plug)
I made a new album notification tool for Last.FM focused on easily excluding non-important artists a while back: http://releasification.frapp.it
Hand-tagged MP3s are a problem, but it looks like I have some bugs in my scanning logic that are creating more false positives than I'd like. I've been collecting library.xml files to try and track it down - if you want to help out, send yours to [email protected].
(shameless plug) I made a new album notification tool for Last.FM focused on easily excluding non-important artists a while back: http://releasification.frapp.it