you don't need any plugin..
tell me what happens when you press that button...
The way monkeyracer said worked for me. You might need to turn on icons in rrconfig.
So, the question I have is this:
I've gone through almost all of my albums on the computer, and have assigned or downloaded a cover image, but only maybe 1 out of 10 or so show up like in the view above. What is that screen looking for to display the album art?
I guess I will have to look when I get to that computer, but I'm pretty sure that almost every folder has a .jpg in it somewhere (not hidden) but I'll look again.