Editing Devices requires MMF2?

This might be too much of an assumption, but.. it seems that to edit devices, you need to edit .MFA files, which would require Multimedia Fusion?  Is that right?

That's correct, take a look at these threads for some reference points.

http://nifflas.lpchip.nl/index.php?topic=2317.0
http://nifflas.lpchip.nl/index.php?topic=2304.0

- inph