Hi CJDBerridge,
No the SONOS system is based on WIFI protocol.
It is possible to stream music stored on an iPhone to a Sonos PLAY:1, but must be connected to your routers wireless network.
Here is a FAQ with more information:
SONOS setup
Thanks,
Max
This is very disappointing as the sonos software is so limited compared to iTunes or Spotify.
Since your using iTunes I assume you have apple device. There is a piece of server software called airsonos that if you leave running on your home computer will enable AirPlay to your sonos speakers.
And given that the thread was 2 years old, it's likely that it's not viable.