I'm working on an ampache now playing drupal module. you can see a glimpse of the feautures I want it to have already on my site on the right hand side. I'm currently working on getting it to grab and cache album art from an ampache installation, but once that is all figured out it'll be ready for release to the world! check back for updates!
ps, My friend at Lights and Shapes is also working on an Ampache Now Playing plugin for wordpress, our release dates should be pretty close.