Turn off hardware monitoring with MOTU Microbook

[TimN]

I have been unable so far to find settings that will enable me to turn off hardware input monitoring in my MOTU Microbook IIc interface and still hear the JamKazam output stream. I set JK to accept 2 Input channels of the interface (a mic and my Pianoteq software piano). JK then automatically required that I use Output channels 1 & 2 of the same interface. I am using a MacBook Air, OSX High Sierra, and the most recent JK update. 

I always hear my piano and mic input directly monitored, on top of the JK output stream. If I mute the MOTU hardware input monitor mix (with MOTU CuemixFX), I can't hear JK output either. How can I turn off input monitoring in the MOTU, yet hear JK through the MOTU outputs?

Thanks in advance for any advice!