V-Sink, takes the pain of driving many thousands of channels away, by appearing like a display to the OS and taking care of the rest. The current implementation can drive 32768 RGB LED pixels at 30Hz.
I am currently working on a DMX driver. V-Sink should be able to drive 192 DMX universes (if you can fit that many transceivers on a board) from an HDMI port. A massive light show can be generated or played back by set-top box or a raspberry pi.