So I just updated to Windows 7 and the library system looks pretty cool. I can get all my music folders point there, but when I switch the view mode to artist or album, I cannot get any of my art to show up. What sort of system is the libraries using to pull in this information? I cannot find documentation any where.

Is it looking for embedded art, or folder.jpg? I pick out all my album art by hand and do not embed it into the mp3. But even embedding it doesn't seem to work either. Anybody have an idea how this works?