i just wanted to suggest an additional mode for displaying album/artist-information in the mosaic-mode, basically a semi-transparent (or just dark background) overlay showing the artist name, album title and maybe year.
you can see what i'm suggesting as an example on the website of this austrian newspaper: http://express.derstandard.at/

I didn't reply earlier because we briefly discussed it on irc.
It's an interesting idea, I'll probably implement it, can't say when.