Sorry, I was unable to participate in the conversation for a day or so.

Originally Posted By: babarton

Another consideration is that you may be playing Real Tracks with BIAB, which are audio NOT MIDI. Audio, of course, will not be sent to your keyboard via the USB Uno cable. If you wouldn't mind, try using one of the old ZZstyles and turn off Real Drums, and see what you hear (and where you hear it).
Bruce


I was indeed using RT, but now I've turned off RD and my guineapig tune is 16 Tons with ZZContry.STY. No particularly good results, however. Midi driver is CoreMidi, and I can hear the rhythm section via the computer, whereas I had previously to set it to Apple Synth to hear it. Midi Studio sees the keyboard and the Uno interface, and the connections test out. But now I do not have the Uno as a port setting option, and nothing at all shows in the Midi In box.

I can hear the output test chord via the keyboard phones, and see the Uno midi-out light blink. The midi input arrow lights when test-plunking the keyboard, but I don't hear anything. FWIW the midi-in light on the Uno blinks at an unvarying 2/sec rate as soon as it's plugged in.

I'm totally thrashing down here, no real idea what results to expect from what. Maybe I have a hardware problem? Could my System Prefs for Sound have any role in this?

I'll try rharv's audio set-up suggestion; definitely open to work-arounds at this point...

Band In A Box 2013
Mac Mini (late 2012) Yosemite (10.10.5)
Monitor 1680 x1050 HDMI
M-Audio Uno Midi Interface, Yamaha DX21 Keyboard