I have a Bluetooth speaker that I use quite frequently with my Lubuntu 16.04 install.
Playback works fine, however I would love to be able to control playback from the speaker's buttons, and also synchronize the volume control buttons on the speaker with the volume control in pavucontrol. I've seen these things work on a Mac, so I know the capacity does at least exist in the hardware!
Does the software exist for handling the control messages? If so what is it, and how do I make a start linking it all together?