Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
I think you are missing something. The PS3 and the 360 sit right underneath your TV. Why should it be necessary to stream TV from a computer possibly running in another room when the PS3 can do it for itself? Streaming may have purposes but convenient it is not.
Anyway if you want to stream TV on a PS3 you can do that already. The PS3 has DNLA support too.