Thanks Benny,

I will look into this. I'm on Mac OS Sierra. Hopefully the experimental version for Mac works ok for me.

Cheers!

Benny, thanks for bringing this software to the group's attention. I'll have to try the demo to see what it features. Looks like X3W is supported as well which is the Motif XF format. http://www.fmjsoft.com/awavestudio.html#formats

This brings the software count up to 3 in my notes which can export Yamaha waveforms:

Awave Studio
JM's MWE
Chicken System's Motif Creator

This is not an endorsement of any of them - just a list of possibilities. Would be interesting to learn if there are any more. Redoing a search didn't result in any more than these three (although I do see Awave now as a hit).