Video Streaming Hardware

I am very interested in the idea of streaming all my content via Wi-Fi at my house. The software seems to be available and ready. VideoLAN will take care of the streaming for me.

My problem is the hardware. If I want to be able to watch the streams anywhere in the house, I would need some portable media device which will be able to connect to the wireless network as well as output the stream via composite to some display device, either a TV or projector. It seems Gigabyte might have a solution in the form of a new motherboard. All I need then is a very small case that will allow me to carry the solution around the house.