I know the mechanics of the Click Change. However, I'm the type of person that won't use or perform something unless I actually buy the material. After watching a clip, if I can see how its done, I still won't use it without buying it first because without first seeing the preview in the first place, I would not had gotten the idea for it. Its unethical to use material that someone put out without buying it first. So even though I can see how he's doing it and I could probably do this change by watching the video a few times, I disagree with the idea of doing it.
-Doug