Do I need to install any special codecs to play Windows Media Audio and Video files?
Installing codecs is not typically necessary if you are running Windows Media Player 9 Series because the latest Windows Media audio and video codecs were automatically installed on your computer when you installed this version. However, if you think your codecs are corrupted or out of date, you can download and install the latest codecs from the Download Center page. For information about playing Windows Media Audio and Video files in earlier versions of the Player, see the Windows Media Audio and Video 9 Series Compatibility page.
Installing codecs is not typically necessary if you are running Windows Media Player 10 because the latest Windows Media audio and video codecs were automatically installed on your computer when you installed this version. However, if you think your codecs are corrupted or out of date, you can download and install the latest codecs from the Download Center page.For information about playing Windows Media Audio and Video files in earlier versions of the Player, see the Windows Media Audio and Video 9 Series Compatibility page.