Wireless Home Cinema System and Win7 Computer – Problem in Streaming Video

I have a Samsung HT C5900 3D 5.1 Home Cinema System and a Windows 7 Home Premium computer. The Cinema System is connected to the router using a RJ-45 cable, and the PC is connected to the network via 802.11n.
I have enabled file sharing between these two devices, so I can access my files and folders in the computer through the Cinema System and, in turn, watch movies on the television.
I have subscribed to ‘Love Film’ on YouTube, and it would be really cool if I can also watch these videos on my television. Do you guys have any idea on how doing this?
I've heard that some people are able to use online streaming through Xbox, but I don't know how they are able doing it. Do let me know how I can set the whole thing up so that I can watch the videos at a more convenient and bigger screen.
Thank you so much.
