I have no interface that shows up to choose.
you need an ASIO driver installed, use the one from asio4all.com if your interface doesnt have its own ASIO driver.
I just tried to do this as I was having the same problem… my computer is converting sounds in the room to MIDI. Like when I speak out loud. So it is getting sound from my computer’s mic instead of the interface… it’s really weird, kind of cool but definitely not what I want to use the program for lol. I can’t seem to figure out how to change this.
open the asio driver control panel with the top button in MG’s interface section: select the proper in and outputchannel and device there.