I have added two more videos to the 4 video mix I was doing and using two four video mixing by percentages … that are controled by the video stream directly linked into their parameter values the percentage is jumpy but fun … when I post the videos I usually put Flash warnings on the video for that reason some people don’t like the flickering of the video.. but it is just about a stable release I am always added and subtracting the audio streams as I please …