You can export most Bryce models out of Bryce, as long as they weren't originally created in Bryce. But about 80% of the Bryce models put in Free Stuff areas around the internet can be exported because they were made in some other program (like Rhino, etc.) You can also export most materials pretty well doing a 180 degree shot of it on a flat-plane. Wolfies-den did a tutorial on it. Ask about it in the Bryce Forum and ask where to find Wolfie.