Please follow the following troubleshooting steps:
If on your system you do not have
RealPlayer, or your version is not the latest, download it and install it
from
RealPlayer USA and press the link
Download Free RealPlayer Installing
the RealPlayer on your PC might solve the problem because during the
installation the codec required the video files will be installed.
Identify what is the version of
Window Media player that you use. If you are not using the latest, you
should download and install the latest version from
English MediaPlayer
If the two above steps do not solve
the problem go to
Microsoft WindowsMedia Community
Please tell us if you were able to solve
this issue or need further help.