I dont think that a player wearing headphones is disrespectful to the crowd. I think a player should be able to do whatever it takes to prepare the best way possible. And if listening to music helps the athlete, he should be allowed to do it. He plays for himself and not for the crowd. It’s him that put all the blood sweat and tears into this…so I dont think that anyone has the right to tell him that he is not allowed to prepare the best way possible, because it might offend some people.