Firefox WMP problem

Hey there! My firefox somehow reverted back to version 6, when i hsould be 9 or ten. It's very frustrating and will not play all videos. I treid reinstalling firefox, no deal. Any help would be great. TYhanks! Heres a screenshot.
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Nevermind, i found a nice link to a tutorial that fixed it, here : http://forums.mozillazine.org/viewtopic.php?t=206213