Just thought I could help you out with some bugs.
1. text="" doesnt seem to support symbols like &.
2. couldn't get the converter from audio-tags to work. I did have artists= and titles= info in my audio:tags, maybe this has something to do with it?
And finally just a suggestion. when clicked on new song, pause the one playing.
otherwise: GREAT plugin, very easy to modify even without "css-support"
Can be viewed at http://www.goodbadmemories.com (quite heavily styled though, with different gif also)