thank you very much dtr and matmat for your hints !
i think i will go the jit.openni route.
dp.kinect is not an option, because it is not clear how much it will cost after the beta period.
information from the dp.kinect website :
"Current Beta version is v0.6.5 with an expiration date of 28 Mar 2013."
What I do is simply put the skeleton coordinates in a 15×1 matrix and run that into a jit.gl.mesh in point drawmode. I don’t need more visualization than that. I’d share it with you but it’s embedded in a larger patch, no time to extract right now. Very easy to replicate though.
Btw, I’d largely prefer jit.openni to output the joints as a matrix rather than the messages it does now.