The Gracenote Node.js SDK by Dominik Danninger can access the API to implement entertainment features into applications. It allows searching for tracks, artists, and albums.
This week's issue of BusinessWeek has a four-part special report entitled "CEO Guide to Mashups" by Rachael King. The articles cover the enterprise mashup space, consumer mashups, mobile and banking mashups.
To date, Sonos has worked with strategic development partners on an invite only basis. It's work with companies like Amazon and Samsung have helped ground the company in the smart home space. On September 6, 2018, Sonos will open its developer program to the braoder developer community.