I've been using Spark with my Filco MJ-2 to map some media functions to the F row. As of now, I have:
F6 - Back
F7 - Pause
F8 - Forward
F11 - Decrease volume
F12 - Increase volume
These all work flawlessly...when I don't have Starcraft running fullscreened. When I do, all of the keys cease to perform their programmed functions.
In addition, I'm unable to have my top right keys (Print Screen, Scroll Lock, Pause) perform any function at all. For example, when I press Scroll Lock, the LED doesn't even light up. Anyone have any ideas?