You know that a technology is becoming a trend to watch when the Economist writes a piece on the topic. We know how big an investment goes into monetizing visual content for our phones, pads and TVs, through the likes of Warner Media, Disney and Netflix. Now there’s a big push into monetizing our ears, driven by Apple and others on the hardware side and Spotify and Liberty Media on the content side. The audio market is still much smaller but it’s growing fast. Apple’s AirPods are guessed to be the fastest growing of all its product lines and are expected to top $15B in sales next year. Spotify and others are aggressively expanding in streaming and also, interestingly, podcasts. Podcasts apparently have better economics than music for audio streaming services.