Sonos have released version 5.2 of their Mac and PC desktop software. The new version adds support for multiple user accounts, the feature which was in the 5.2 Beta enables you to have multiple accounts setup with music providers so you could have your own Google Play Music account setup along with your families accounts and then have access to them on your Sonos system. Another update is enhanced sound quality for the PLAYBAR including improved EQ and volume balance. There is also lock screen controls for the Android app.
You can read more about the 5.2 release on the Sonos site and you can update your install via your Sonos controller app. Sadly there is still no Sonos app for Windows Phone or the Windows Store.