Setup GarageBand Input/Output #
On the top left menu open GarageBand->Preferences
Click on the “Audio/Midi” tab.
Set the Output Device to “CASTER Stream Mix”
Leave the input Device set to your audio interface.
Setup CASTER application #
Open CASTER application – installed in your Application folder.
Add Application #
Hit the Add application button and Add GarageBand to CASTER tracks:
Add Microphone #
Hit the Add Microphone button and Add your Microphone.
Choose Monitor Device #
Choose your Monitor device to hear your stream:
Set FaceTime Microphone to “CASTER Stream Mix” #
In the top menu select Video and set the Microphone to “CASTER Stream Mix”.