I just installed this...This is my observations so far:
-It really doesn't show the album art, BUT when on lock screen, it does show it.But if you have pattern lock screen, the album art is shown behind the pattern screen, which means that most of the screen is black with the pattern dots only shown and there's a strip of the art on the top of the screen.
-It works pretty damn good and fast, it has all controls on notification drawer(previous track, play/pause and next track), it also shows them on the lock screen AND you can change songs with the volume button when screen is off.
-If you know how to do stuff on your phone with root explorer, (and judging on the fact that you have an ICS rom on your phone you pretty much do), you can download the .tar file, extract it in a file on your pc, transfer this file to your sd card, and then move the contents as followed:
(change permissions to match the rest of the apps there) and then press install.
(just set permissions to match the rest)
Why do this?Because then the sound is amazing, that's why!
ps.While trying to install SoundEnhancement.apk it said that it didn't manage to install it, but the music app still works like a charm