The Windows Media Player Firefox Plugin will enable Firefox users to view Windows media Player content directly from the open source browser. It is available for Windows XP and Windows Vista, both 32-bit and 64-bit platforms. On Windows Vista users that install the pug-in will be prompted for an elevation of privileges request.Installation Instructions: • Installation of the Windows Media Player Firefox Plugin may require administrative access to your PC. It is recommended that you close all other open browser windows before continuing with the installation. • Click the Install button to automatically download and install the Windows Media Player Firefox Plugin. • Depending on your security settings, you may see a Security Warning dialog box. Click Install to install the plugin There is a known issue if you are using Firefox version 2.0.0.3 on Windows Vista with the installer failing with error code -203. To work around this simply restart Firefox (you will get a notification that Windows Vista will be changing the Firefox compatibility settings) and then install again - the second time should succeed.