Okay, that makes a little more sense to me. Selecting "File" menu, then the item "Import Chords From MIDI File" brings up a pretty busy, confusing box for the Chord Wizard. If you use the "Open (change)" button, you should be able to navigate to the midi file you want to use. Then use the "interpret chords now" button, and this will "extract" the chords from the midi file and place them into a BIAB type file, where you can manipulate them further if needed.

In BIAB for Mac, there is no way to listen to the original midi file that I am aware of. You would only be able to play the BIAB accompaniment generated from the "extracted" chords.

If you want to listen to the original midi file, you'll have to do that in some other program.

Bruce

Macbook Pro 2018
2.6 GHz 6-core Intel Core i7, 16 GB RAM
OS Monterey
BIAB for Mac 2022