Rhythmbox ships with many popular plug-ins already installed - such as lastfm scrobble support, visualizations, DAAP music sharing and iPod support, but you can expand Rhythmbox's features further with third party plug-ins that range from a 10 band graphic equalizer to simple 'jump to now playing' hacks.
Enable 3rd Party Plugins
To install Third-Party plug-ins you will need to create a ‘plugins’ folder for Rhythmbox.
Open a Terminal and type:
That’s it! You’re all set to start installing 3rd party plugins!
Desktop-art shows the current song cover and track details on your desktop, as well as being a ‘control’ allowing you to pause and skip between tracks.
rest here