Making a bluetooth speaker working with Debian 8.5

This solution works for me with the Bose SoundLink Mini.

Install the required packages:

sudo apt-get install pulseaudio pulseaudio-module-bluetooth pavucontrol bluez-firmware pulseaudio-module-gconf

Edit and check /etc/pulse/default.pa

Be sure that the lines below are present in /etc/pulse/default.pa:

.ifexists module-bluetooth-discover.so
load-module module-bluetooth-discover
.endif

And add the line below (or check if presents):

load-module module-switch-on-connect

Then restart the computer and it should work!