Compatible with Nightingale
The art is displayed at bottom of the service pane.
NowPlayingArt is highly customisable and handles multiple images, which can be clicked through, scrolled and/or viewed as a slide show.
23 July 2013, version 188.8.131.52.: changes to work properly with changed Freebase access
Please report any problems to me at Songbird.NowPlayingArt@gmail.com.