Windows Media Player can't play the file because there is a problem with your sound device, such as a sound card or sound controller.
Things to try:
Quit other programs that might be using your sound device, and then try to play the file again.
Install an updated driver. To see if an updated driver is available, use Windows Update, go to the sound device manufacturer's website.
If you have multiple sound devices installed on your computer, try using a different one. The selected sound device might not support Secure Audio Path (SAP).
Depending on which version of Media Player you're using, either click Organize, and then click Options, or click the arrow below the Sync tab, and then click More Options.
Click the Devices tab, double-click Speakers.
In Select the audio device, click a different device, and then click OK.
Make sure your sound device is working properly. To troubleshoot device problems, refer to your sound device's documentation.
Make sure you have a sound device installed on your computer. If not, install a sound device (such as a sound card), and then try to play the file again. If you can't install a sound device in your computer, you might be able to resolve the problem by attaching USB-based headphones or USB-based speakers to your computer instead.