Nope, it's at least eight and definitely dynamic under certain conditions. These other three appear here for Music: (4.5) Videos (6) Radio (7) Match Videos would probably disappear if there were no music videos in the library. Radio can be disabled under Preferences > General. Not sure why Match is there, having never used it (yet). Maybe clicking "No Thanks" on that screen would make it disappear but I want to leave it as-is for now.
11/30/12 at 2:33pm