Setup Guide: BlackHole & Zoom (Audio)

To route the AI voice directly into Zoom, you need a virtual audio cable. We recommend BlackHole on macOS.

1. Install BlackHole

If you don't have it installed yet:

• Option A (Homebrew): Run brew install blackhole-2ch in your terminal.
• Option B (Manual): Download the installer from existential.audio/blackhole.

2. Configure System Audio

Once installed, you need to route the browser's audio output to BlackHole.

1. Open Audio MIDI Setup on your Mac (Command + Space, type "Audio MIDI Setup").
2. Ensure BlackHole 2ch is visible and active.
3. Crucial Step: When running the StallingsMachine Proxy page, you must ensure the audio playing from the browser goes to BlackHole.
   • You can set your entire System Output to BlackHole 2ch via the Sound icon in the menu bar.
   • Note: You won't hear the audio yourself if you do this, but Zoom will hear it.
   • To hear it yourself and send to Zoom, create a Multi-Output Device in Audio MIDI Setup that includes both "BlackHole 2ch" and your "Headphones/Speakers". Select this Multi-Output Device as your System Output.

3. Configure Zoom

1. Open Zoom Settings > Audio.
2. Set Microphone to BlackHole 2ch.
3. Now, any audio playing from your computer (specifically the browser running this app) will be treated as your microphone input in Zoom.
4. Speak into the Proxy App (Stallings Machine) -> AI Voice Generated -> Plays to BlackHole -> Zoom broadcasts AI Voice.