Before earbuds and noise-canceling headsets, passengers used stethoscope-like devices where sound traveled through a hollow plastic tube. The jet age brought smooth, fast and comfortable intercontinental travel to the world. It also saw the introduction of early in-flight entertainment (IFE) systems that relied on fragile 16mm film and temperamental projectors. If the film didn’t break, passengers could see the movie; but what about the soundtrack? Although […]