A Little Tip

I found that that after I intalled Mozilla Firefox 1.0.7 I cannot play stream video files in Windows Media format embeded in a web page (not the type that with one click to directly open Windowa Media Player and play the video in the player itself), either in Firefox or IE. In IE I just don't get nothing and in Firefox I get the message box shown above. Don't know why, maybe Firefox just steals some .dll files from WMP or has some software conflicts...weird..I reinstalled WMP 10.0 and the videos now start running, all fixed.