How do you send a message so that you can use the sounds in the prg-u, prg-a, prg-b, prg-c, cmb-u, cmb-a, cmb-b, and cmb-c settings?

Goto Page:

http://www.cc.ece.ntua.gr/~jmelas/ns5r/

It is a home page for the NS5R by John Melas.
Click the "info" button and you'll see a link to a section on bank selection. Just print out the info then either send the controllers each time you want to change bank, or key it into Mastertracks custom bank message section. (NB: I'm not sure how Mastertracks works, as I've never used it, but there should be something like this.
Hope you get it going,
Ben