Also note that if your apartment is fairly large wireless may not work very well. You are actually much better hardwiring a SONOS system if you can (Setting up a LAN). This way it works best.

The monies involved in what you are proposing are significant at least 1.2K or more for speakers and install materials.

You should also consider small speakers such as the Monitor Audio Radius Series Speakers. They sound great with Sonos and are easy to place and setup

Sonos is fabulous when setup properly. However NYC apartments are not the friendliest landscape for a Sonos system.

Smart-HDL

Introduce
S-bus RS232 module
Now you can upgrade your exist system without replacing it
Smart-HDL S-bus RS232 to 3rd party integration has the following function that solve all your integration problems
1 - 2 way receiving and sending
2 - Fixed ASCII 232 open protocol for S-Bus
3 - Flexible ASCII, HEX editing
4 - Sending up to 990 ASCII string and Hexadecimal value to control other devices
5 - Receiving up to 99 ASCII string and Hexadecimal value for other devices to control the S-bus lighting, IR, Security, AC, Curtain, Automation etc..
6 - 22 characters ASCII string Length for more control
7 - Commands Milliseconds delay time options for more powerful control
8 - Work in all baud rates and bit, easy changing setting from software to fit all devices in the world
9 - Ready integrated 2 way with Nuvo music system, and soon with Opus, x10 and others on demand.
10- Can be integrated easily with any home device support ASCII or hexadecimal in the world in few seconds programming.
11- Unlimited rs232 devices you can but in the system
For more info, Manuals, Films and others you can visit our website
http://www.smart-hdl.com

For installation and Programming Film you can visit http://www.youtube.com/sbustraining