One cause of this problem might be that you do not have the Windows Media Player 8 codec installed. This should install automatically, but if it does not, please try manually installing it by downloading the codec from this location:

Windows Media Player 8 Codec

Another cause might be that you are behind a firewall and your Windows Media Player is not properly configured. Please follow the instructions below to configure your player to accept HTTP streams:

Windows Media Player 6.4

1. Open Windows Media Player.
2. On the menu bar, select "View" and pull down to "Options."
3. In Options, select the "Advanced" tab.
4. Highlight "Streaming Media" in the window shown, and then click the "Change" button.
5. Under Protocols, uncheck "Multicast, UDP, and TCP." Only "HTTP" should be checked.
6. Then click "OK" to close this window, and "OK" again to close the Options window.

Windows Media Player 7

1. Open Windows Media Player.
2. On the menu bar, select "Tools" and pull down to "Options."
3. In Options, select the "Network" tab.
4. Under Protocols, uncheck "Multicast, UDP, and TCP." Only "HTTP" should be checked.
5. Then click "OK" to close this window, and "OK" again to close the Options window.

This should allow you to view around your firewall.

Note: Please make sure to check with a parent, teacher, or adult in charge of the computer before downloading any software or changing any settings on your computer.