Perhaps I did not make myself clear in my first post...

What I want to do, is to open a standard MIDI file in BIB

I want to add Real Tracks and/or Real Drums to play along
in sync, along with the MIDI track...

Is this possible?

There is no option to "IMPORT" Real Instruments or Real Drums
into a BIB MIDI arrangement; at least, not that I can see.