I have a raspberry pi 4 running volumio, I also have a bluetooth speaker which I would like to use.
Can anyone advise how I can enable bluetooth on Volumio on the Pi to pair with a bluetooth sepaker?
Thanks
just hang a BT sender / reciever on your output 
if you don’t have a payed account
otherwise you use the build in volumio option.
Volumio has no built in option for BT speakers, there was a plugin created, but the status is unknown.