LoopMac is a native macOS audio loopback and replay application. It is designed purely for personal use and makes use of the macOS Core Audio framework to capture system audio with Core Audio taps. The user interface is built with native AppKit (Objective-C++) and audio file playback uses AVFoundation; icons are macOS SF Symbols.
LoopMac has been designed and tested on macOS Tahoe version 26.5 using AppleClang 21.0.0 and CMake 4.3.2. No attempt is currently being made for backwards compatibility.
Guidance on using CATapDescription for Core Audio capture provided by Yingzhong Xu.