LinuxQuestions.org - Error When Loading WMV Files, Totem, FC4

When trying to load WMV files I get the below message:

Code:

The filename "filename.wmv" indicates that this file is of type "Microsoft 

WMV video". The contents of the file indicate that the file is of type "Microsoft ASF video". If 

you open this file, the file might present a security risk to your system.



Do not open the file unless you created the file yourself, or received the file from a trusted 

source. To open the file, rename the file to the correct extension for "Microsoft ASF video", 

then open the file normally. Alternatively, use the Open With menu to choose a specific 

application for the file.

If I rightclick and then choose Totem or any other media player, they load perfectly. But I cannot doubleclick them as any other file and expect them to play, this annoying message comes up. If I rename the WMV files to ASF I can play them just fine, but they are not ASF files. They are WMV files, and I don't know if renaming them to ASF will have other consequences.

Anyway, I need this message killed and I hope to never see it again. How do I kill it?