If it has preouts you could use your own wireless transmitter/receiver setup. Why would you need a wireless center? The .1 means the subwoofer. Haven't heard of an avr that has it's own wireless setup included.
"I realize that somebody playing free music isn't as commercial as a hamburger stand. But is it because you can eat a hamburger and hold it in your hand and you can't do that with music? Is it too free to control?" - Don Van Vliet (aka Captain Beefheart) discussing commercial success in the music biz