dreamscene just wrote exactly what I'd wanted to. I second and third it. foosion, please mark this as a feature request? Please? Pretty please?
Additionally, the following features would also be lovely:
1. Ability to cycle through "Front", "Back", "Disc", etc., by single/double-clicking the album art.
2. Opening up the picture file in the default viewer (if it is a folder.jpg or other non-embedded picture file) via a right-click menu (or possibly, double-clicking).
3. (If it is technically feasible to override the embedded art): Ability to choose which to display when both embedded art and folder art are present.
Thanks for making the best music player out there (and for keeping it free).
Cheers.
QUOTE(dreamscene @ May 12 2008, 18:49)

Still desperately checking every beta changelog for some progress concerning the default ui album art viewer... but nothing new, yet

Is there at least still the consideration of making the album art viewer a little more customizable? The argument that the average Joe doesn't need a configurable album art viewer is feeble, as the average Joe isn't a candidate to use foobar2k in the first place...
Why not give us at least just a little flexibility, e. g. setting wildcards of our?
The 'new' default ui has really grown dear to me, but not being able to display my scanned cover art is just annoying, more than ever because making the album art viewer a little more flexible wouldn't be too hard at all, would it?
Kind regards & keep up the good work,
dreamscene