There are hundreds of wireless speakers out on the market. None of which will match up really to a wired speaker system, but you may have been a bit vague in your original post as to what you are trying to achieve.
What is your budget? This always matters for helpful recommendations.
What are you trying to achieve (sound quality, usability, etc.)?
Where are you putting the speakers?
You are aware that wireless speakers, still typically need to be plugged in, right?
What sources do you intend to use with the speakers?
I just run wires to all my speakers, and in my research I have found that most wireless speaker solutions are Bluetooth exclusively. This is range limited instead of network based which I think really sucks.
Sonos has a bunch of network based players which may work nicely for you depending on what you're trying to achieve.
At the end of the day, I think people may have viewed your thread hoping you had found good product and needed some basic setup help, as wireless speakers aren't a huge market segment due to the fact that they aren't actually wireless. I mean, if this is for a quality setup, then an A/V receiver, AppleTV, and some good speakers just makes more sense.
