I listen to music at the following times:
– When in a car with my family
– After a shower on a day where I don’t have lectures. The reason is because I get up pretty late on the days when I do have lectures because my lectures mostly start at 9am.
– Sometimes when playing poker or doing lab reports/essays
– When I am upstairs on my computer
– Sometimes when cooking I listen to my iPod
As for the times at which I listen to music, below is a link to some nice graphs showing them. They were plotted by looking at the statistics that Last.fm collect from my listening habits which is collected from my iPod (since last April when I got it) and when I listen to music from iTunes.
http://img693.imageshack.us/i/listeningto.jpg/