Hi,
To set a movieclip as material, you'll just do like this:
var materialMovie:MovieClip = new causticsMovie() as MovieClip; //
Create a MovieClip instance
var causticsMaterial:MovieMaterial = new MovieMaterial
( materialMovie ); // Create material based on MC
var sphere:Sphere = new Sphere({material:causticsMaterial}); // Create
sphere and apply materialIs this what you were after? J
