Font de Music is a site I just found out about from Larry Ferlazzo's excellent blog. This is a great site for animating text w/ music, and publishing via a link. It can also be directly sent to Twitter. My only gripe is that it doesn't generate an html code which would be nice for embedded into a site or blog.
I recommend checking out Font de Music by clicking here!!
Click here for my example... http://www.rightwork.jp/fontdemusic/#permalink?id=381