A while ago I was developing an extension for MIDI interfacing, however after a rough patch followed by a computer failure, I lost all of my programming & faded from MMF. However I've just got back into it for design of an idea i thought up, and needed MIDI
After a bit of searching around I found that Mabry MIDI controls work via ActiveX.
For all those looking for MIDI support, I recommened this ActiveX. You can find it at: http://home.brisnet.org.au/~mlevoi/mabrymidi.zip
From my brief experience with this, here are a few tips:
First, make sure you always set 'SetMessageEventEnable' to 0, as otherwise MMF will crash when receiving a MIDI message
Select the device, then open, then start.
When closing, stop, then close.
And that is all. I hope this is of use to somebody out there