HAI with MP3s from NAS to two audio zones

[npa412]

I'm going through MileHighAutomation for my HAI setup and they suggested that for audio I don't use HiFi2 since with only two audio zones it would be overkill. They suggested that I use a Nuvo with the HAI to Nuvo connecotr and then connect ANOTHER two devices (one for each zone - http://www.amazon.co...33398810&sr=8-3) to the Nuvo. Talk about overkill. Has anyone else come across this issue - I don't need iTunes streaming or anything else (Internet radio/audio streams would be OK); I primarily want audio read via SMB shares from my NAS. Isn't there a Sonos solution for HAI?

EDIT: sound would be sent from basement to in-ceiling speakers (i.e., no wireless music transmission); also, I need a stand-alone solution, so nothing through a PC always-on type scenario

thanks!