I would think having a personal soundtrack following you around isn't really much of a super power, but what do I know? I would get sick of it after a while. Also, what if you were, or wanted to, listen to music on the radio or a live band? Since going for an infinite super power like the Outsider's or Silver Surfer's is considered a cop-out, then I would still take Hiro's time-manipulation power. Jumping back and forth through time, stepping outside of time entirely, and teleportation to boot. If I could add in telepathy I wouldn't need anything else.