Hello,
This post has been very useful and as of 3/21/18 the scripts for the UI and plugin work great for using volumio as audio out to a BT soundbar. If you start with a clean install and follow the instructions it works well.
One tip that helped me and two questions to the community…
Tip: After a reboot pair the speaker before starting your audio stream each time, otherwise you have to restart the stream. I thought the BT audio was not working because of this. The BT implementation is not like RPi stretch (as of early march 2018) where you can pair a BT speaker, select as default, and trust the BT right from a GUI to launch each time as default.
My question:
I must control the volume from the physical speaker controls not the soft mixer as in raspbian. I can adjust the volume when paring the speaker to a phone, windows and full raspbian but not volumio with the plugin.
How do i set alsa mixer or pulse audio or whatever to control the volume from the volumio interface and how do I trust and auto pair the BT speaker on reboot?
I can not find where in the alsa mixer and its conf files to set this.