1. Click on the plus sign button.
Select the option “Audio Input Capture”.
2. Give the audio source a name e.g. AC7600 Audio.
3. Choose the device e.g. AC7600.
Press on OK to add the AC7600.
4. Open the Advanced Audio settings.
5. Adjust the Advanced Audio settings. AC7600 Audio: "Monitor and Output" / Desktop Audio: "Monitor Only (mute output) and press on “Close”.