Use any wmv link on the internet.
There is no issue for some who don't know how it should work. I have a fast internet connection here and set my WMP buffer to buffer 10 seconds. This often will allow the media to begin streaming immediately even with a 150 Mb file size. But that is with IE7. In Firefox, it will download the entire file and THEN launch WMP and play it. This may take 5 minutes here even at my speeds. According to some of the links offered the trouble with Firefox is some people can't even autolaunch the WMP and play the file. The IE tab makes it work and all I have to do is right click on the link to make it happen. You can look at any of the sample TV shows I have on
my website.
I did notice that since I have the latest java installed, FF will play java embedded video, even wm9 files without aid of IE Tab. For straight links that require the browser to open the player, it doesn't work.