Windows Media Player cannot play the file because there is a
problem with your sound device, such as a sound card or sound
controller. You might encounter this error message for one of the
Your sound device is in use by another program. Quit other
programs that might be using your sound device, and then try to
play the file again.
Your sound device requires an updated driver. To determine if
an updated driver is available, see the Windows Update Web page at the Microsoft Web
site, or see the sound device manufacturer's Web site.
The selected sound device does not support Secure Audio Path
(SAP). If you have multiple sound devices installed on your
computer, try using a different one.
Your sound device is not functioning properly. To troubleshoot
the problem, see the Sound Troubleshooter in
Windows Help or refer to your sound device's documentation.
You do not have a sound device installed on your computer.
Install a sound device, and then try to play the file again.
To use a different sound device
On the Tools menu, click Options, and then click
the Devices tab.
Double-click Speakers, and in Audio device to
use, click a different device.