I'm new to this forum, so please bear with me 
I got Trapcode Particular, and wanted to make 'floating' videos. I downloaded the picture montage template, but what about if I want to use video clips instead? In the Texture Time Sampling box, there's an option "Random - Still" that's selected. If I choose "Current Time", it changed all the particle 'layers' to whatever's on top of the source comp, so that every 'particle' is the exact same. I need to create something similar to the intro of this video: http://youtu.be/sfgT28bDboM.
I do know that the editor of that intro (Tel Stewart) used TP to make that effect. I'm not sure how to do this though. Could someone help me? Thanks!