Disclosed is a public-address system which coordinates and processes audio input from multiple sources including the individual microphones from the personal mobile devices of audience members as well a primary speaker or moderator. Various embodiments provide a capability for the system to queue requests from audience members to broadcast over the public-address system. Various embodiments provide a capability for a moderator to manage the queue of requests from audience members. In various embodiments, the audio input signal processing, audience member requests, speaker queue and moderator management capabilities are hosted in the cloud or Internet.