I assume that you are using Windows Media Player...
"By default, Windows Media Player will automatically attempt to acquire a license silently unless the license server requires some input from you (such as registration information or a fee). You can turn off automatic license acquisition. If you do so, you will be prompted to obtain a license for any new content that requires one. To prevent Windows Media Player from acquiring licenses automatically, do the following:
1.
On the Tools menu, click Options.
2.
On the Privacy tab, clear the Acquire licenses automatically for protected content check box.
Please note that this setting does not affect license acquisition from online stores."
Try using anything other than WMP ! |