Hooked one of the two up to a wired connection, still no luck; tells me I need to ensure I'm using a 2.4 GHz wireless network that is 802.11b/802.11g compatible, and trying to sell me a boost, lol. Do I need to try a full reset?
Best answer by Stanley_4
Power down all your Sonos gear, reboot the router. Power up your Wired Sonos, let it sit for a couple minutes to stabilize and then reboot your controller and check to see if you can connect to it. If you can power up the rest of your Sonos one at a time.
Might try setting up static / reserved IP addresses in your router's DHCP settings page to see if it prevents this from happening again.
If that doesn't work try the Sonos 24x7 Twitter or their phone support when it opens.