scmpc is a client for MPD which submits your tracks to Audioscrobbler.
Features include:

  * Can be run as a daemon, either as a user or as root
  * Keeps unsubmitted songs in a queue which is saved to a file at a
    configurable interval
  * Will try to reconnect to MPD and Audioscrobbler if the network
    connection fails
  * Works with a password-protected MPD server
  * Can connect to Audioscrobbler through a proxy
  * Works when crossfading is enabled

WWW: http://scmpc.berlios.de/