I’m going to say that there’s an excellent chance that when you listen to music you either use a digital playback device, a CD player or maybe a turntable. But over the years, the consumer electronics industry has tried to convince us fans that we needed more gear and different formats. In the spirit of keeping them alive in memory, let’s go through some of them. You might remember DAT, Digital Audio Tape, which was sued into obsolescence by the recording industry because of its ability to make perfect digital recordings of CDs. The industry thought this was going to lead to rampant piracy and managed to stop the technology in its tracks. That was mildly disappointing for some—but only for a little while. Within a couple of years, all personal computers started coming with CD burners. The recording industry tried to fight that battle and lost, making the whole DAT fight mute. More dead formats next time.