How to listen to MIDI files from MediaBay?

Is there a way to listen to MIDI files from the MediaBay?

yes. they way I do it is to load an instrument in my project (might work with instrument track too but I never tried), then select it as a source inside the media bay (should be an option for that in the right corner on the bottom once you select a midi file) - the source for midi will stay the same once you browse selected it and browse thru your files.