Microsoft has launched a beta test of Windows Media Center Internet TV, which will offer 100 hours plus of ad-supported entertainment from MSN Video.

As of September 28th, US users of Windows Vista Home Premium edition and Windows Vista Ultimate edition will be able to access the beta version of Internet TV via Media Center.

This new feature, lets users get television and video content on their PCs and TV sets without a TV tuner in their PC, will be supported by an advertising platform provided by YuMe and will be available to viewers for free.

The content, from MSN Video, will include full episodes of TV shows, full-length music concerts, high-quality movie trailers, news from MSNBC and sports clips from Fox.

Designed for both the TV and PC screen, the video is optimised for broadband streaming. Viewers will be able to watch the videos on Extenders for Windows Media Center, including Xbox 360 consoles, as well as PCs running Windows Media Center in Windows Vista Home Premium and Ultimate.