Ok, I've gotten MD installed and running. I've just a few issues to work out:

I've got a Pinnacle 800i tuner and it's picking up old analog stations just fine, but I can't seem to get it to scan for and pick up HD OTA channels.

My mouse pointer seems to disappear in set up screens unless I'm over a text editing field. Any ideas?

I'm having trouble getting sound from the tuner card. Everything else sound-related is fine.

Also, is there a cheat sheet for keyboard shortcuts for MD control available somewhere?

Thanks beyond all recognition.