Rhythmbox Microblogger can send notices about your current music to a microblogging service from Rhythmbox (it currently supports Twitter and Identi.ca). You can edit text before sending a post, and use your own template.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
The plugin has been updated for rhythmbox3 (gnome3).
The toolbar button doesn't work any more (because of rhythmbox API changes). Users should use CTRL+M for sending notices now.
The oauth module was changed from tweepy to python-oauth2. The code was written from base. The interace was improved a lot. libnotify is now used. Run-time text replacement was added. So, for example, if you enter "{title}" in a message, it will be changed to the music title.