The BBC has decided to use Windows Media technology for their upcoming on demand online service meaning that only people using Windows XP or Vista will be able to play content. The iPlayer will be launching later this year and will let you download and watch content aired on TV for the following 7 days for free.
Five and Channel 4 already have online paid download services that also use Windows Media and will not work on Mac OS X or Linux. ITV is launching its online download service later this year though little detail has emerged about this service so far.
Its a shame the BBC is not using open standards to protect its content and that a significant amount of public money will be going to Microsoft to fund the service.