Sync "Rating" action to "Love" on last.fm

[naku]

In Last.fm there's the functionality to "Love" a track, which is similar to giving a rating in Google Music.
It'd be great if the extension was able to synchronize these tracks:

• Get a list of loved tracks and import them into Subsonic
• Synchronize the "Thumbs up" action to "Love" on last.fm

http://www.lastfm.fr/api/show/track.love
http://www.lastfm.fr/api/show/track.unlove
http://www.lastfm.fr/api/show/user.getLovedTracks