I don't think that any of Last.fm's data would hold up in court. As far as I know Last.fm just records the artist and track names. In this case I could rename

I don't think that any of Last.fm's data would hold up in court. As far as I know Last.fm just records the artist and track names. In this case I could rename a track to say U2 when it is actually some other artist and Last.fm wouldn't know the difference.