I need to hear the sound at both the source & destination computers. It appears you are muting the source computer speaker and line out jacks as I can unmute the (source computer) sound but 1 second later it is re-muted !!! 
The SW is of no use to me if I can't hear at both ends, as the source is our building music server and drives speakers at both ends of the building, but the far speakers are difficult to wire to as there are block walls in the way, so Acoustic Bridge is trying to send audio via wi-fi!
Works beautifully except it breaks the sending sound.
Is there anything I can change/set to stop muting the sending computer sound output?
ken b