I experienced some problems when using the embedded windows media player of some streaming website.

The problem consists in not being able to listen to the audio of the videostream. No way to get it work through the windows media player settings neither the audio card settings.

Here the fix, the ac3 filter, i cant remember from where i got it (thanks to the author anyway). Just unzip and run it. No need to reboot.
It works.

Download the fix here