AirCheck: Record your Mac's system audio to a file, no driver

I'm Hannes, a DJ and solo developer. I built AirCheck because I kept losing recordings of my own sets. macOS still will not hand you an audio file of what it is playing: QuickTime records the mic, a screen recording gives you a video, and the usual fix is a virtual driver that rewires your whole sound setup. I broke my own audio twice that way. AirCheck is one button. Pick a source, system output or any Core Audio input, press record, get a WAV or MP3 in your Music folder. System audio goes through Apple's ScreenCaptureKit, so nothing is installed in your sound settings. The part I actually spent the time on is dropout recovery. Interfaces brown out, drivers hiccup, and a three-hour set cannot be repeated. AirCheck notices a stalled input within seconds and restarts into the same file, so you get one continuous recording instead of one that quietly ended at minute nine. The app is $39 once, no subscription, a 14-day refund by email with no questions. macOS 14 or later, Apple silicon. Happy to answer anything.