Control panel added, along with a demo video.

It's still very unstable, don't use it for anything important, etc. It frequently hangs and I've left Debugger() statements in the error conditions as I'm still trying to debug the thing (Debugger() statements cause it to break into macsbug. If you don't have macsbug installed and it hits one of these statements, you'll get an Unimplemented Trap bomb or something).

But, it's working mostly well enough to get the general idea.