Sonos AirPlay
Sonos added AirPlay support in software update 3.4. You’ll still need to connect an AirPort Express to a Sonos ZonePlayer but once connected you can stream to all Sonos players.

The good people at Pocket Lint provide a nice how-to guide here.

Full details of the Sonos 3.4 software release can be found here:
http://sonos.com/support/software_update.aspx

[VIA SLASHGEAR]