Tuneblade is a piece of software that runs on windows.
what it does is rather simple. Its like a poor man’s Sonos multiroom in sync audio setup.
Tuneblade transmits the audio rendered on the host machine running tuneblade to one or more airplay devices with audio 100% in sync.
Ideal for multi room audio.
eg. playing back spotify on the tuneblade machine would have the spotify audio rendered on multiple airport endpoints. A good client would be a rpi running shairport-sync.
The API would make it possible to enable/disable rendering to airplay clients as well as controlling their individual volume.