mpdscribble - A Music Player Daemon (MPD) client which submits information about tracks being played to a scrobbler (e.g. last.fm).
See the INSTALL file.
Rating / Love
With MPD 0.17 or later, clients can submit track ratings over the client-to-client protocol. To do that, the client sends the following command to mpd:
sendmessage mpdscribble love
The song that is currently playing will be rated with the "love" attribute, as soon as it gets submitted to the scrobbler.