Pre-Viz with Expression

For a show this coming season we're attempting to completely pre-viz the show to our fullest extent. Right now we're looking at using ESP vision as our pre-viz program. The only issue being that ESP requires a DMX input source whether that be software on the machine providing it or a DMX to USB box. Of course, we would want the ability to pre-viz without being tethered to a board all the time.

 The show will be running on an expression 3 with emphasis server. Is there anyway to re-create the console environment on a computer (maybe using offline) AND create an internal network that ESP vision would recognize?

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