There are a lot of great little apps for the Mac but this one is better than great and so simple. A little window displays the music you’re listening to, shows you the cover from the album (queried from Amazon) and lets you drag it to the desktop so you can “pick up” the album and play it when you feel like it.
Side note: This is almost the exact same post someone else wrote but I cant remember whom. I click links as I read posts and news in NetNewWire and then go back to the stories and/or sites but by then I dont always remember where I got it from! Anyway, sorry for the “steal”.