CBS will distribute its television programmes more widely over the internet, adding new deals with Joost – the service from the founders of Skype - Microsoft's MSN and AOL to existing agreements with Apple's iTunes and Google's YouTube.

Some of the content will be free to consumers and supported by advertising, although premium fee services, such as the purchase of episodes from iTunes Music Store, will remain in place. The expanded initiative, called the CBS Interactive Audience Network, will mostly be available only in the US, with some video clips and full-length sporting events available internationally. CBS said the new services would be available in the coming weeks.

Users will be able to view new episodes and reruns of shows including CSI: Crime Scene Investigation; CSI: Miami; CSI: NY; the Showtime series Fat Actress, starring Kirstie Alley; and CBS and Showtime sporting events, the online video site Joost said in a separate statement. CBS did not specify whether the shows will be available for download or streaming.

The other distributors named in the agreement are CNet Networks, Comcast, Bebo, Brightcove, Netvibes, Sling Media and Veoh Networks. Akamai Technologies will provide the content delivery system, CBS said.

CBS previously featured clips from popular shows such as Late Show with David Letterman and CBS News on YouTube, Amazon and iTunes.