Several popular online audio and video formats won't play back in Windows Media Player, so you'll need separate software. To cover all the important online media formats, download the Flash player from w.adobe.com/uk, the Quicktime player from, and Realplayer from. In each case, follow the links to download the relevant applications. With these players installed, you'll be able to stream video from sites such as You tube listen to online radio broadcasts from the BBC and download movie trailers from Apple Trailers.