Hi, The error is coming from multiple webservers trying to start at the same port address. The webserver for serving the sounds was per device. I’m only having 1 GA so is didn’t test multiple devices. For the plugin i need only 1 webserver to serve devices so I moved the webserver to the plugin level and the server is now created once. That should solve this error in version 0.0.14.
Version 0.0.14 has has also support for Sonos (+SYMFONISK) devices and is published.
Thanks for testing and discovering.