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!"
16:9 is usually broadcast anamorphically meaning the vertical lines are identical whether the TV is 4:3. However the set might be letterboxing 16:9 to make it fit a 4:3 set in which case I suppose you'd want to do it. I'm surprised though that it doesn't have a zoom feature to show the centre portion of the 16:9 image and forget the edges. EU boxes usually have such a feature, and mostly the edges just contain redundant information any way because shows would be framed for 4:3 & 16:9 so all the action would be in the centre portion.