Audioscrobbler is a very easy to use application that gives you the possibility to quickly scrobble your current iTunes track.
Audioscrobbler provides keyboard shortcut for adding tag, sharing the track info, or for searching the lyrics.
Here are some key features of "Audioscrobbler":
· Suggests Last.fm’s metadata corrections
· Scrobbling credentials are stored in your KeyChain
· Growl notifications show with iTunes artwork
· Bundles a Dashboard widget that shows the current highest voted artist image
· Sparkle updates
· Last.fm account