You need to re-associate those 3 file types with WMP.

 

Open windows explorer (not IE) and go to Tools/folder options/file associations, find those file extensions in the list. and re associate them with WMP.

 

If you happen to have any of these types of files on your hard drive somewhere, you can right click on one of those asf, wmv, mpeg files and select "open with" and choose WMP, tick the "always use this program to open" tick box. Hit OK this resets the file association also.

 

I wonder if the newer WMP got removed.

 

Get the newest version here..  http://www.microsoft.com/windows/windowsmedia/player/download/download.aspx