Hello!
I started playing a song. Auto-DJ was on. I turned it off (by unclicking its icon, in the bottom right of the screen). But a new song played when the current one finished. And then the same happened again.
I would give my version of MusicBee, but there seems to be no 'about' option within the program. Oh, it is filed under 'help' (for some reason). It's version 3.4.8033,