Jim - I'm not sure, but I think you are looking for audio/video switching. From the manual:
Switching between digital and analog audio (Input Mode)
When you connect devices to both digital and analog audio input jacks on the receiver,you can fix the audio input mode to either device, or switch from one to theother, depending on the type of material you intend to watch.
1. Press the input buttons to select the input.
2. Press OPTIONS.
3. Select [Input Mode].
Auto: Gives priority to digital audio signals. If there is more than one digital connection, HDMI audio signals have priority.
If there is no digital audio signals, analog audio signals are selected. When TV input is selected, priority is given to Audio Return Channel (ARC) signals. If your TV supports the ARC function, digital optical audio signals are selected.
Optical: Specifies input of digital audio signals to the OPTICAL jack.
Coaxial: Specifies input of digital audio signals to the COAXIAL jack.
Analog: Specifies input of analog audio signals to the AUDIO IN (L/R) jacks.
Depending on the input, [Input Mode] may be dimmed on the TV screen and other modes cannot be selected. When [2chAnalog Direct] is being used, audio input is set to [Analog]. You cannot select other modes.
You can also use INPUT SELECTOR on the receiver to select the input in step 1.
This might also help:
Switching the monitors that output the HDMI video signals (for STR-DN1050 only)
If you have connected two monitors to the HDMI OUT A and HDMI OUT B jacks, you can switch the output for these two monitors using the HDMI OUTPUT button on the remote control.
1. Turn on the receiver and the two monitors.
2. Press HDMI OUTPUT.
Each time you press the button, the output will be switched as follows:
HDMI A - HDMI B - HDMI A+ B - HDMI OFF
[HDMI A + B] may not work if the compatible video formats of the monitors connected to the HDMI OUTA jack and the HDMI OUT B jack of the receiver are different.
[HDMI A + B] may not work depending on the playback device you connect.
Last edited by kwcanuck; 06-25-2014 at 10:30 AM.