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What is the easiest way to route an audio output (e.g. a playing song) into the recording input of another application (e.g. discord's microphone input)?
I'm looking for a solution that is independent on the output volume and device.
For example: I want an audio file to play at full volume into discord's microphone input while my output volume is only at 20%. I do not neccessarily need to hear the audio file myself.
I'm self-answering this for Linux, but looking for someone who can provide a Windows and Mac OS solution too for a complete Q&A on this issue.
Windows solution: https://www.vb-audio.com/Cable/index.htm There also is samples in Windows WDK how to make virtual audio device: https://code.msdn.microsoft.com/windowshardware/windows-driver-kit-wdk-80-e3161626
– Alex – 2018-08-16T12:33:06.280Do you mind leaving a full answer? – confetti – 2018-08-16T13:10:11.937
Done. Organized it as the answer – Alex – 2018-08-16T13:54:52.087