"Jacket" is iTunes plugin for Mac to display artwork and lyrics.
Tested on OS X 10.10.2 and iTunes 12.1.
Download v2.2 2012.8.20
Added Album(a), Comments(c), Year(y), Track number(t), Rating(r) settings.
Download v2.1 2012.8.18
Added rating(0-5), artwork position(p) and help(?).
Download v2.0 2011.7.30
For Lion, 64 bit iTunes. No internet artwork search.