DISPLAY ALBUM ARTWORK
An add-on called WSH panel mod and script (WSH CoverFlow) will let you add an album cover flow to your interface, and also serves as a more intuitive way to select individual albums. Note: This isn’t available on the Foobar2000 website, but a simple Google search will throw up the right download link.
The album cover flow goes in the top-most pane, after which you'll be prompted to open the WSH Panel Mod Configuration and paste in the script included in a text file in the original download. The covers are organized alphabetically, and a nifty slider at the bottom shows your position in the alphabet, a great help when you're scrolling through covers of your huge music library.