Cheetah DVD Burner + where to download free movie files.?

I've got a DVD-R disc, and I recently bought Cheetah DVD Burner. I downloaded a few BitLord movie files, but whenever I try to burn the disc It says "Cheetah DVD Burner has stopped working." every, single time. Is it because of BitLord? Where can I find free downloadable movie files? (I'm prefferably searching for Disney clics, etc.)