TripScout - Self-guided city tours from local experts
Virtual Audio Cable - Ever wanted to record your speaker output? (loopback) This is for you.
Detour - Immersive audio walks, now in 17 cities
Loopback by RogueAmoeba - Get all the power of a high-end studio mixing board, right inside your Mac!
Drive & Listen - Drive & Listen is an app that lets you listen to music and local radio stations while driving the vehicle.
JACK Audio Connection Kit - JACK Audio Connection Kit|Home