macOS has a built-in screen recorder that can capture your microphone alongside the video. What it can't do out of the box is record system audio — whatever's actually playing on your computer.
This video shows the one-setting workaround using AudioRoute.
📥 Download AudioRoute (free 14-day trial, Mac + Windows):
https://audio-route.com
📖 Full Mac guide:
https://audio-route.com/guides/record...
System requirements: macOS 14.2+ (Sonoma) or Windows 10/11. Apple Silicon & Intel, x64.