Introduction
You need to have processing with the oscP5 library installed for this.
I have not got round to writing about this but these two files work for me, run the blender example and then move the cube with the processing example.
For some reason I have not got this working over a network. I am not sure why. Please let me know if you figure out how to do this, it could be really useful.
http://www.simonblackmore.net/notes_media/processing_to_blender/