Fact is Wolf_Rider you either work for NP or you just talk from the back of your garden thinking you got something figured out by filthering it from you narrow point of view... heh... Narrow Point... suit them better I guess.
Anyway... while you rant your bigotry on these forums I must say to the others here concern rather about the real issue of this thread, that I managed to make Freetrack work in DCS A10c via PPJoy. That in Windows 7 64bit and in 64bit variant of the game.
So...
If the developer(s) decide to make their game open to more than just one interface for headtracking we are OK.
Some people don't have TIR neither do plan to have one... maybe they don't want to use their necks too much so an alternative to that fancy interface should be provided. Thus ED (DCS developers) decided to let all the 6DoF of head be controlled by keys or axes from joystick... thus having freetrack translating it calculations into joystick axis is more than enough.
It works OK. No extra CPU load. The fuss relates to the fact PPJoy is developed for free by a passionate simmer from South Africa and he didn't had 500$ to make the drivers "approved" my M$... thus you need to be in test mode to install them...
here is my tracker:
it costs to build 2.5$ and some fun.