Thought I'd give you fine folks an update...
Just started working on the install for V4.1, so it should be ready in a few weeks or so.
Booch, you will get your wish in 4.2, as I haven't quite got the tempo/key lock perfected yet, but it's real close to meeting my standards. I don't want to hold this release much longer, as it has some nice features (besides, Rockit has a planned upgrade schedule, that I am trying to hold to).
Here's a shot of one of the new jukebox screens -- this was somewhat inspired from my Mac, and can be used at home, or for a rental touch screen machine, if you want to rent out jukeboxes (it will come with both standard, and wide screen versions, that should work great with the HP Touch Smart):