Trying to play music via bluetooth?

Hi,

I just purchased a gear4 HouseParty Rise Wireless 2 and I've managed to pair both my iPhone and MacBook Pro via bluetooth with it.

When playing the music through my iPhone via bluetooth, there is no problems whatsoever. But when I play music through my MacBook and select "Use as Audio Device" in the bluetooth menu, the MacBook connects fine, but there is no sound coming out of the stereo.

Is there a reason for this? or a fix?

Thanks,

Ross