Mr. P, first thanks for the reply. I have the USB485 to connect to the first controller. My showtime central is in a controller box and it has the SD mini director and the FM transmitter attached within. There is a headphone jack (where you could input the jack from a set of headphones) off the side. So I am understanding that I would connect the PC to the USB485 and on to the first controller, then connect via the headphone port on my PC to the FM transmitter. From there I should be able to have the LOR scheduler start the sequences, thus allowing my receiver to pick up the signal from the FM transmitter. I have speakers attached to the receiver for those walking plus the transmitter for the the car traffic.