MacOS instructions

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Instructions

The app can’t directly listen to the output of your device. Only input devices are accessible.
You’ll need to install a virtual audio device that can route the audio output to a fake input.

Virtual Audio Devices

A virtual audio device is needed to:

  • Send the audio of your Mac to other devices
  • Use the audio of another device as microphone input

It’s not needed if you just want to listen to the audio of another device.

Install any of these

Blackhole (Free, open source, advertised as 0 latency)
VB-Cable (Free, donations welcome)
GroundControl (Free)
Loopback ($100+)

1. Listen to your mac on another device

Listen to your audio on another device

  • In AudioRelay, select a virtual device as an input device
  • Launch Audio MIDI Setup (via spotlight for example).
  • Select the virtual audio device
  • Right click on it, then click on Use This Device For Sound Output
  • Start AudioRelay on another device and connect it to your Mac
  • You should now hear your Mac’s audio

Listen on both the mac and phone

  • In AudioRelay, select a virtual device as an input device
  • Launch Audio MIDI Setup (via spotlight for example).
  • Click on the + sign in the lower left corner
  • Click on Create Multi-Output device
  • Click on this new device
  • Right click on it, then click on Use This Device For Sound Output
  • In the right pane, check your virtual audio device and your speakers for example
  • Start AudioRelay on another device and connect it to your Mac
  • You should now hear your Mac’s audio from both your Mac and the other device

2. Use another device as microphone input

Let’s say you want to use your phone as a microphone in Skype (it’s applicable to any app)

  • In AudioRelay
    • Go to the Player tab
    • Select a virtual audio device as an output device
  • In Skype
    • Find the voice settings
    • Select the virtual audio device as an input device
  • Start an AudioRelay server on your phone
  • On your Mac, return to AudioRelay
    • Click on your phone in the list of servers
  • Your phone’s microphone is now streamed to AudioRelay > Blackhole > Skype