Before iPods (or even CDs) there were boomboxes. It's been 20 years since they disappeared from the streets, but the nostalgia they evoke is about more than stereo equipment. We've changed the way we listen to music — and to each other. Watch a video about the history of the boombox. Learn more about the boombox at http://www.npr.org/templates/story/story.php?storyId=103363836.