I'm having trouble trying to play an episode of CSI NY on windows media player. To watch the video you click on the csi ny link on cbs.com. This completely free and legal. Once you click on the link, a program called innertube pops up and asks how you want to watch the show. You get 2 choices, media player and real time player. Choosing win. media, it of course buffers as it plays. the problem is that it constantly buffers and doesn't want to play continueously. Is there a codec that i'm missing in order to get this to play?

Nope. Media Player will have codecs or prompt to download codecs if needed.
Depends on your internet connection and how busy/congested the server is.