The OhmSound synthesizer that maps to the Ohm64 in a variety of lovely ways is now available:
In standalone and Max source code forms.
I took the X.FM example and blew it up to work with the Ohm64. It has auto-discovery of the controller, and context sensitive controls. It’s a good foundation for building instruments for the Ohm64.
Even if you don’t have an Ohm64, you might appreciate the design in which MIDI is treated as a separate interface from the screen, yet they communicate with each other to provide updates and feedback.