Good evening folks. I'm working on a project to modify an old Concertmate keyboard to function as a MIDI controller and want to also have it retain its current functionality, with the ability to pass audio into and out of the PC if it's connected via USB. I already have a Teensy 3.6 to use for this, and know that I will need a Teensy Audio Adapter for the audio side. What I'm not sure of is what else I will need, since I'm sure that many of the pins I need for the diode matrix for the MIDI side will be in use for the audio adapter. Can anyone help me out here?