view larger album art with left click

It would be helpful in evaluating album art if we could left click on album art in the tag panel, and get a popup of the album art in 1:1 or some form of larger view, perhaps similar to what iTunes does. I have lots of art that are 600x600 pixels or larger, and it's tough to see if the cover has any quality problems with the default size of the art in the tag panel. Thanks for considering this.