Question / Help combine Audio from Feed and Desktop?

Derek-medianc3

New Member
New to getting multiple sources running on OBS at a church while using presentation software. We have camera and display 2 going to live feed. I have a live camera feed that runs from a sound mixer to computer through camera (looks like mixer to camera to computer to live feed). Then have desktop audio. Problem we have is with both camera feed audio and desktop audio turned on. When a person sings and goes through mixer to camera feed, while using audio that has come from the computer (mp3 playing), we get just a lag/Echo between audio of desktop and camera feed audio in our live feed. If we mute the desktop audio that lag/Echo goes away because it is just getting live feed audio. HOWEVER, we want to at times to play a video from display 2 ONLY to live feed, but when we turn off camera feed, the audio also goes away as it should. Since desktop audio is muted to prevent the echo we will need to go in each time and unmute, after we have started video ----
QUESTION - Is there a better way, or other way to still get camera feed (which will be audio from mixer) and turn off the video part?? OR is there a way to set up Desktop audio to some source as camera audio to prevent the echo with live singer?
THANKS in advance for any thoughts or help!
 
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