Why can I not watch AT&T Broadband TV using Firefox on Windows Vista?
AT&T Broadband TV is not currently supported with Firefox on Windows Vista. Windows Media Player 11 is not shipped with the necessary plugin for Firefox. As soon as Microsoft releases the Windows Media Player 11 plugin for Firefox on Windows Vista, we will start supporting AT&T Broadband TV with Firefox on Vista. In the mean time, you can watch AT&T Broadband TV on Windows Vista using Internet Explorer.