The patch is made in max/msp for 8 cubes, but we're planning to make a VST instrument from the patch. Every cube represents a synthesizer module, and we used a colour code to remember which cube represents which synthesizer module. For example, sine oscillators (green cube), white noise (blue cube), envelope generator (purple cube), main speaker output (red), etc.
We use 2 sides of the cubes as inputs, and the other sides at outputs. To make sure we don't forget which side is the input or output, we've attached stickers at the top of the cubes.
More info: http://www.percussa.com/2012/10/20/modular-synthesizer-for-audiocubes-synthor/