Here he is demonstrating TiR 5. This video goes into more detail about the TiR 5 hardware and software.
It was this video that sold me on a TiR, I never used one before TiR 5. One point I disagree with is his preference for the TrackPro over the TrackClip. The TrackClip is a simple wireless way to use TiR while the TrackPro requires you to use a headset, and also have the reflectors plugged into a USB. I like the freedom of using my PC speakers and the TrackClip without being wired up to anything. He describes the TrackPro system as unobtrusive, but it is not. You are required to play with your headset, which is wired, and also the ProClip that fastenes to your headset, is also wired to your computer.
I purchased the TrackPro but if I had to do it over I would get the TrackClip. The TrackPro package comes with both systems so I have flown with both, but I never use the TrackPro. If I want to play using headphones I can fasten the Clip to them, using duct tape if I had to, and play with the freedom of wireless.