The etiquette section in the USGA rules of golf says: "Players should always show consideration for other players on the course and should not disturb their play by moving, talking or making unnecessary noise. Players should ensure that any electronic device taken onto the course does not distract other players." It seems to me that if anyone else can hear "your music" while playing a stroke, it's too loud and is the duty of the offender to turn off the sound.
How do you all feel about it?