do you mean in a standalone window when the mini-player is active?
the closest you can get currently is you can show the now playing list (its one of the icons on the right of the mini-player) and in the now playing list you can see the artwork.
Another option is to use the CD Art Display plugin (see the Plugin preferences) which i think is a nice solution
Topic: A Way to see albumn art in mini player. (Read 2715 times)