There are going to be 2 ways into feeding audio into the part 15 FM or AM transmitter. 1. Is the 5.8 GHz audio and video sender that will send audio from the mixing equipment and computer and remotely send to the transmitter keep the AM or FM transmitter away from receiving equipment for better sensitivity and selectivity and also get better range. like put the FM transmitter close to a window area.
2. Another type of source for remote transmission is to use a bluetooth receiver and use the bluetooth dongle from the computer, but it’s not good, because they did not come out with a bluetooth audio mixer dongle yet.
If you have other ideas or suggestions please let me know.