I have the Pyromania Pro CDs of fire, explosions, etc. Each has an image sequence of the main files and an image sequence of matte files. However, I can't figure how to composite an explosion over an existing video clip. I load the matte sequnce on one track, the main image sequence on another track and the video clip on a third track. I've played with different composite modes but just can't figure it out. I have no problem compositing Digital Juice stuff. Would the matte or main image be on the first/top track? What would I set the composite mode to for the tracks and the image sequence properties? I'm obviously overlooking something stupid.