Thank you very much, now I can understand the concept of this sound/video synchronization method. However I have a difficulty to copy the audio on each sound track since it only accept to be copied on the lower soundtrack (Audio 4) of my project. Similarly when I place the Video part of the countdown leader on Video track 1, the Audio goes only to Audio track 4. I feel as much anxious as if I had to jump from the Sky Tower of the magnificent city of Auckland!