I am running Windows PC, Zoom audio (Pro). I have numerous mics running through a mixer into the PC (that is running OBS). I am running Zoom on the same PC as OBS. I have set the Zoom output (i.e. speaker) to virtual cable B audio input cable B. I have set the Zoom microphone input to virtual cable A output. In OBS I have set the virtual camera correctly so it "sees" the Zoom participants, and the Zoom participants "see" the PROGRAM screen in OBS when they join the Zoom call. My problem is the ZOOM AUDIO. I have signal going from Zoom into OBS (the meters bounce up and down just fine). When I talk on a mic (that is running through the mixer into the OBS PC) the sound meeters are bouncing up and down just fine. Zoom participants can hear me when I talk into OBS using the mic (through the mixer), and Zoom participants can hear (and see) each other. No echos, etc. What the PROBLEM is is this: I CANNOT HEAR ANY OF THE ZOOM PARTICIPANTS IN MY OBS PRODUCTION BOOTH. I can see the sound level meters bouncing up and down, so I KNOW signal is going into OBS. When I stream and/or record (while testing everything) the playback of the sound is perfect - everyone on the call comes through ZOOM fine . But I MUST be able to hear the Zoom participants in REAL TIME though my headphones in the OBS production booth. Under "Advanced Audio Properties" in OBS, I have set the Zoom mic IN to "Monitor and Output", and the microphone mixer properties are set the same ("Monitor and Output"). CAN SOMEONE PLEASE TELL ME WHAT I'M DOING INCORRECTLY? Might it have something to do with the sound settings on my PC? I have been battling this issue for 4 months with very little to show for it. Hoping someone in the forum can advise. Thank you Chris Means, Arizona USA