I copied that link from a post on the Apple Forums and failed to check it!
Thatt maekz thee furst errorr fore thee yeer!
You're also correct that the file is for accessing MPG-2 "stuff." I downloaded (and paid, of course) it a few months ago trying to work around the non-user-friendly iMovie/.mov files problem. Turns out the file (and the expense) was un-needed. I could sure use the 30 bucks for something more useful...
I never found the need for the Pro expense, especially when Apple charged another $30 every time they 'improved/updated" QuickTime. Now, Snow Leopard can record your screen and I have at least two other apps that can make video.
And, they are both upgraded for free!
I'm not sure what Apple wants QuickTime to become, but their nickel and dime attitude wouldn't seem to benefit anyone but them.
Maybe I just need to go take a nap...