Never before have we done so much device plugging and unplugging. When you finish adding files to your Zune, you can’t go back and drop in more. You cannot interact with your player until you unplug it, and plug it back in. While it’s plugged in you can’t interact with it; with the Zune there’s no such thing as listening to music out of the player and charging via the sync cable at the same time. We couldn’t play music off the device through the application, either. When your Zune is plugged in, your Zune is absolutely nothing but plugged in.