What do you mean by "default for those codecs" ?
I mean all those file types are associated to be opened with Windows Media Player. When I click them, Windows Media Player pops up and plays them.
Here is exactly what I mean.
http://milfotos.org/images/89cb7bd7e...8c2dfbeed2.png
Here is what my Video folder looks like.
http://milfotos.org/images/8fb90776d...bbd34f298e.png