terry I agree with what you said. No one pretended to use these videos to show off the keyboard's sound capabilities. The fact is that both the hardware and software guys gave priority to finish and fix the iron and the software so website stuff and other lower priority stuff was left behind. I know it's not ideal marketing but you know ... trade show put great stress on engineers in order to get the iron going for the show.
I think the only solution is to make videos of each function of the X-76 while being in a studio and putting online separate high bitrate mp3s so that people can judge its audio capabilities.
This stuff takes time and as said above hw/sw development takes priority over this so I guess it will take some more time to the videos appearing online.

Regarting "drawing the crowd". The fact is that the NAMM did not seem that crowded plus we had a guitar booth near us with some guitar superstars giving autograms all the time which deviated people in that direction :-)

Anyway speaking frankly no keyboard booths were particularily crowded, NAMM visitors loving only guitars :-)
Keep in mind that NAMM is not an end user tradeshow so AFAIK the attendees are mostly music companies, distributors, dealers, store owners and some music company employees that get some free badges.

cheers,
Benno