Do you? And what genre?
Do you feel it helps you play better or perhaps break up the monotony of the in game music?
I usually do, I listen to Jungle/Drum n Bass (Shout outs to all my fellow Junglists where they may be). Me listening to my favorite genre, helps me, I suppose, zone out of life a bit and focus more on what I'm doing. It does break up the monotony of the game music however, sometimes the in game music gets me amped just as much. Depends on which song it may be.
~Wiz