Here's an alternative suggestion : a Sonos Play3. $ 299.
See : http://www.sonos.com/shop/products/play3
IMO much better audio quality then normal. I have one on loan.
To make it work you might also need to get a ZoneBridge (only 1 needed for as many wireless Sonos units as you need).
If you can connect the Play3 direct to your LAN, then you don't need a Bridge unit.
See : http://www.sonos.com/shop/products/Bridge
Sonos sometimes has a special offer of Bridge + unit, so expect this again later in Fall.
I have 6 Sonos Zones (mostly Play5) and have gradually sold off my big floor standing speaker/amp combos and replaced them with Play5 units.
Control is via a PC controller or if you have an iPxxx, you can use that also.
Sonos creates its own mesh network so doesn't care about your existing Wireless N setup.
The Play3 talks to the Bridge (or direct to the LAN); the Bridge then talks to your network via LAN, so needs to be connected to your Router/Access Point/Switch or whatever. This will then stream Audio from any Music source you have AND connect to Internet Music sources (Radio, Napster etc).