Hi there does anyone know how to remotely control the volume of an R7 wireless speaker when it's paired with an Amazon firestick. I am guessing this has got to be a common pairing given the number of firesticks out there. But it seems to me that as soon as you use the multiroom app you have to disconnect from the blue tooth pairing to the R7 and hence have no volume control.. Seems that the software restrictions on this speaker really let it down. Would even buy a little remote to control the volume..