I have an existing Sonos Connect which is hardwired to my LAN. I have attempted numerous times to connect my Sonos Play One. The P1, will connect when it is hard wired, but never via WiFi. I have updated the device as of today.
Switch: Netgear Prosafe Plus
Wifi AccessPoint/Router: Apple Mac Airport Extreme (Network 1) / Apple Mac Airport Extreme (Network 2)