boot your track up, goto in game mediatracker, not the intro or outro ! "you will see a button record" click that now place the car at the start line, run the track with a nice smooth run, when you cross the finish line and happy with your run, press the ESC button on key board, you then be asked would you like to use click the YES, this place's the ghost into the media bar, now set the trigger in the same media bar to trigger it in the game..simple done
p.s if you not happy with the run press the ESC button and do not save it or use it...then just start the record again by placing the car on the track to repeat the media above ^^^
just abit more info on what Bucky as said to you, hope it helps you out more