Dzjang:

I just tried this. I only played a couple of songs but it worked correctly, using the same settings you're using in the Juke box options window (I didn't mess with anything in the "practice section").

Have you tried pointing the Jukebox to a different directory?
If that doesn't work, I would try creating a new directory with just a few songs (say 5) and trying that.

If not, someone wiser than I on this Forum can likely help.
Good luck!
LLOYD S