Engadget - Digital audio. There's a very good chance that you've enjoyed some today. It's one of the more universal aspects of technology. In fact, perhaps the more relevant question would be, when was the last time you listened to an analog format? The truth, for many, will be quite some time ago -- vinyl purists and the odd cassette fanatic aside. Yet, despite its ubiquity, there's a lot of misunderstanding and confusion about digital audio.