This is a video of Philip Kaplan discussing the headphones he built with an integrated CD player on top. You can also store extra CDs on spindles attached to the earphones. It includes a remote control, battery pack, LCD display, and a spot to display the CD case of what you’re currently playing so everybody can know what the crazy person is listening to. Now that — that’s a quality product. Would I wear it at the gym? No, but only because I don’t wear over-ear headphones at the gym. I like to hear all the farting so I know where to avoid walking.