Please place all of your electronic devices in this container.  All of your iPhones, your computers, your game consoles -- they all go straight into the container,  Now, I'm going to place this full container into this cannon . . . and rocket them to the moon.  You seem upset.  I apologize.  I only shot your electronics to the moon so you can learn how they function without getting distracted by their bright lights and colors.  No headphones in ears!  No texting under the table!  In order to truly appreciate how amazing our new music players are, let's travel back in time to see how old music players work.