OK...lets start back at the basics. Select your System Preferences by clicking on that icon in the dock, or dragging down to it in the Apple pull down menu in the upper left of the screen.
In the list of all the different preferences is Flip4Mac WMV. Once you open that up you will see tabs for the various settings. Click on the Update tab and hit Check Now. It will query their site and advise if it's necessary to update.
If for some reason you are still having trouble with this, then I'd suggest you go to:
http://www.Flip4Mac.com/download.htm Proceed to download and install the 2.1 version
Now...once you've confirmed (or reinstalled) F4M is current, and you're still having a problem viewing the link I posted. I would then suggest referring to my previous reply as per checking the custom preferences settings in the F4M preferences;
Under the Plug In tab I only have "maintain aspect ration" checked, and in the "Movie tab" I only have "open avi files" checked. You might try to check "create streaming movies" and see what happens.
let us know what you find out