Windows Media Player cannot play the file. You might encounter this error message for the following reason:
The file is either located in a folder above the location of a Web page containing the Windows Media Player ActiveX control or the file is in a folder above the location of a playlist (a Windows Media file with an .asx extension) that is referencing it. The Player does not support using relative paths to access folders above the current one.
To fix the problem, the Web page creator should modify the path to the file so that the file is located in a folder that the Player can access. For example, the path should not include the format "..\".