Streaming web TV hannel

Hi, I need to have a TV like streaming channel - so I can upload movies and broadcast them one after another and the visitors can watch them thru a web player (either FLV or WinMedia) like they would be watching TV. I need a possibility to have multiple parallel streams, and to be able to loop videos once the last video has been played (if a new one is not inserted on time). The solution has to be robust and ready to receive a lot of simultaneous visitors. Server is Linux [login to view URL] with plesk 9.3 installed