sorry, how is flash content save from being copied? As soon as, I can display it on my screen I can record it. It can be even easily scripted (a friend of mine did sth. like that for a streaming page a while back). Also flash or any proprietary plugin solution won't help you. As soon as it gains any traction, there will be "save video" plugins for firefox, chrome etc.

Is this really a problem? If you are scared about smb. stealing your content, you probably shouldn't put it on the Internet ;)