Routing GarageBand’s Audio to SYQEL

GarageBand runs only on a Mac. On SYQEL Desktop, pick App Audio: GarageBand in the audio source list. No virtual cable is needed. In the web app, or on a system too old for App Audio, send GarageBand’s output through a virtual audio device instead.

SYQEL Desktop: pick GarageBand directly

1. Play something in GarageBand.
2. In SYQEL, open the audio source list at the left of the top bar. If GarageBand isn’t listed, click the refresh button (↻) next to it.
3. Pick App Audio: GarageBand. The entry uses the name your system gives the app, so it may include a version or edition.
4. On a Mac, the first time you pick an App Audio source, macOS asks for permission. Allow it.

You keep hearing GarageBand as usual. App Audio needs macOS 14.4 or later.

The web app, or an older system: use a virtual audio device

The web app can only hear a microphone or an audio input, not other apps. Send GarageBand’s sound into a virtual audio device, then pick that device in SYQEL.

1. Set up a virtual audio device: BlackHole or Loopback. That guide also shows how to keep hearing the music.
2. With Loopback, add GarageBand as a source in your Loopback device; you don’t need to change GarageBand’s settings. With BlackHole, open GarageBand › Settings › Audio/MIDI (Command-comma) and set Output Device to the Multi-Output Device you created.
3. In SYQEL, pick the virtual device in the audio source list, for example BlackHole 2ch or Loopback Audio. The web app adds ”— system audio” to the name.

If the Input meter at the right of the stage doesn’t move, see Troubleshooting audio detection.