Are there any suggestions on what I can do to watch MSN videos again?

I previously had no problems, but know with the new site set-up I can only see the video, I cannot hear the audio.

I was reading about Audio codecs, but I would first need to know what codecs those videos are using to be able to download the proper ones to install on my computer.

Most videos that I play that open in Windows Media Player I don't have a problem with, WMP will find the codec automatically if I don't have it.

However at MSN videos they play right in the browser and not my WMP, and those are the ones I have trouble with.