Talk to your webmaster yoda....i know brian has his site up this way where if you link something inside it...say even a thread it won't direct link you. It will re-direct you to the "please login/register" page.
I'm sure its something simple.
Also Chuck's site is that way.
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Edit:
Just wanted to confirm that you are correct in that if i "direct link" someone to the video it will still run. So just ask your webmaster to change that for you.
Jim
It's already set up that way. If you provide a link to the forum and someone isn't registered, they will be taken to the "public" forum page. That's the default. Just direct link'em to the forum. Tell them they need to register first. This is a great club, they may never leave!