The Lighting Controller

Right Click in the control board panel center near the top, then select DMX MIDI patch and noodle from there..

You are correct (In Mac-speak, or at least Digital Performer-speak, I can use Interapplication MIDI to specify ShowXpress as an Output.)
The important step is to launch my sequencer before I launch ControlBoard.

I am able to trigger buttons in LIVE via MIDI input.
I am also able to record these MIDI triggers in a MIDI sequence.
I am not able to play the MIDI sequencer and trigger these same buttons in LIVE.
Is there capability of inter application communication between my host sequencer (Digital ...