I always listen to music while on the computer for any length of time. In the car, I plug my ipod in to the car speakers. In other places, I listen to music through my headphones. If I'm in a place where no music is playing or I can't listen to anything I play music in my head. Only thing is I can't listen to music while I read except for like acoustic instrumentals, and I don't have that many, and when I go to bed. I can't sleep with music because I always listen instead of trying to go to sleep (and that's hard enough as it is!). Only other time I don't listen to music is when I'm in deep thought because it distracts my thoughts.
Beauty and Harmony through Entropy.