You can record the audio output of a MainStage concert. When you record audio output, all audio on the output you choose is recorded (including the metronome, and so on).
Before you record audio output, make sure the correct output, recording location, and file format are set in the Audio tab of MainStage preferences. For information about setting recording preferences, see Setting MainStage Preferences.
Click the Record button in the toolbar.
Click the Record button again.
You can also map a screen control to the Record action to record audio in Perform mode, and assign a key command to the action to turn recording on or off using a hardware control.