How to Record Your Mac Screen with Internal Audio

Record the sound already playing on your Mac — internal audio from apps and the system — into a screen recording.

Internal audio is the sound the Mac is already playing: a browser tab, a call in another app, music, or a video. It is not your voice. Shoverlay can put that sound into a screen recording. On the Mac this control is named system audio.

Record the screen and the internal audio

Install Shoverlay on the Mac App Store. It needs macOS 11.5 or later.
Grant Screen Recording in System Settings → Privacy & Security. System audio uses that permission on supported macOS versions. Quit Shoverlay and open it again after you allow it.
Choose Record from the menu bar or the All-In-One picker. Select an area, a window, or the full display.
In Recording settings, turn on system audio. Leave the microphone off if you do not want your voice in the file.
Pick MP4 or MOV when you need a soundtrack. GIF and animated WebP are pictures in motion, not the format to keep internal audio.
Stop from the recording toolbar. Trim the clip in the built-in editor if you asked Shoverlay to open it afterward.

If the recording has no internal audio

Screen Recording is off, or Shoverlay was not quit and reopened after you turned it on.
System audio is off in Recording settings.
The Mac itself is muted, or the app you are recording has its own volume at zero. Check System Settings → Sound.
You exported a GIF or animated WebP and expected a soundtrack.

A mono mix is available if you want the channels combined. A microphone track is separate: it needs Microphone permission, and you only turn it on when the recording should include your voice as well as the internal audio.

The file stays on your Mac

Shoverlay does not upload the recording and does not ask for a Kingfont account. There is no usage tracking.