Vista - Can't Get Folder To Throw A Seven

I have a problem that has only just surfaced - it's not life-threatening, just somewhat annoying. When I start up the 'Video Library' section of MCE I get TV, Movies (obviously folders I've made) and Music, which contains the album artwork from all my music files. I can't seem to get rid of this. I don't want to stop watching the Music folder per se, I just want the Video section to stop watching it. Anyone know how to selectively deselect a selected folder? I am prepared to venture, with nothing more than a faltering lantern and an unshakeable belief in the rightness of my cause, into the fog-shrouded hell of the Registry if that's what it takes....