Pedant points:

• Use common sense as necessary for borderline or ambiguous cases
• Use your own judgment as to what reasonably counts as ‘often’
• By ‘music-playing equipment’ I mean equipment for playing recorded music; musical instruments are outside the scope of this poll
• Devices which can play music but are not specifically intended for so doing (e.g. a computer that just happens to have a sound card) should be considered music-playing devices if you ever play music on them; otherwise make your own judgment.