I'm trying to use an existing wired LAN in my office to create a DIY PA system. I have existing audio speakers that take typical RCA, 3.5mm or XLR inputs and want to attach them to the network to play sound or announcements. I also have two sets of microphones that I woudl also like to connect to the network to transmit sound to the speakers.
What I'm wondering is if there are any simple adapters that would allow you to plug in a microphone (or line input) to broadcast to a set of receivers that are connected to normal wired speakers to transmit sound over an IP networK? So far, the options I have been seeing are mainly for extending an audio signal over a single direct Ethernet line, but not across a network that may have Ethernet switches and other hardware in between. Any ideas/suggestions?