When Egghead is talking with Dr. Doom, he presses on his music player, which is supposedly attached to the left side of his lab coat. We see the music player in close-up when he presses on it, but it's not visible at any other time in the scene. For comparison, check it out in the next scene while Egghead is aboard the Squad's flying headquarters. This shows that it would have been clearly visible in the previous scene.