Thanks SJS02 and Benesi.
In Fragmentarium declare this:
Then you have to do all based on this time variable. Consider that you have to use the older non-progressive renders (like DE-Raytracer-v0.9.1.frag). For this animations I'm using my own tracer mod, and I use sin and cos function for varying parameters. I still have to work on camera animation, but maybe I'll wait for Syntopia to implement some keyframe system (he said is planning to do it in the future versions).
Love the jellyfish.

Apparently there was a bug in the version I was using- time didn't increment in animations. I downloaded the newest beta (from the DE thread), and will probably get around to testing it tomorrow. Without keyframes... I'm going to have to design a bunch of algorithms around time to manipulate the variables...