Sonos just came through and will support "Schmiede welcomes Music and Bits" (16./17. September) with two Sonos Play: 3.  One as a price and one as a toy to play/hack with. 

So all participants of "Schmiede welcomes Music and Bits": get your free Sonos App (for iPhone/iPad or Android )

want to participate? participation is free of charge. Registration will be open till September 14th 2011