Sonos will release a new app and operating system for its speakers in June - The Verge
Sonos updates its iOS Controller app with Universal search, new redesign
Die Sonos Apps - Eine Anleitung zur Verwendung | Sonos Community
The new Sonos S2 app is now available to download
How to set and up and use Sonos for Android | Android Central
GitHub - Thyraz/Sonos-Kids-Controller: Software for self made touchscreen jukeboxes for kids. Supports Spotify streaming and uses Sonos for audio output.