There are several possible causes of this problem. We suggest that you check each of the following to be sure your system is configured correctly: Check that your external speakers or headphones are fully connected. Check to verify that you are able to hear system alerts or other computer sounds (this would ensure that there isn't a problem with your sound card or speakers). Be sure that the audio level on your speakers is not turned down too low or turned off. Make sure the Windows Media Player is not muted or that the sound level is not set too low.

If you are connecting from your workplace or on a home network, are you behind proxy server (firewall)? If so, you may need to configure your Windows Media Player software.