I have the beta of iTunes+ and sometimes it sets my display picture to the album art even though I don't have the option checked. It doesn't do it on every song, and I haven't been able to find a way to duplicate it. It just happens sometimes. Is this known to you? Is there a fix for it?
The latest one is a beta version posted in the forum only. I'm aware of this bug, I have sorted it out, and I'm going to release the beta as a proper final version soon, so you can expect an update from within iTunes+ soon.