I wrote a little python program that basically connects to FreeTrack and connects to X-Plane over the network to move the pilots head around the cockpit. As the program is using X-Planes native UDP interface it can connect FreeTrack to ANY computer (Linux, Mac, Windows) running X-Plane 9 or 10. No additional plugins are required on the simulator computer.
You get the utility here:
http://forums.x-plane.org/index.php?app=downloads&showfile=15415
Have fun,
Mark