I think about it like this: I work on computers all day long, I know WinXP like the back of my hand, when I deal with a foreign language copy of XP, I am still able to navigate because everything is second nature to me, it sometimes scares me how I was able to navigate around not reading anything.
He is able to use his better than average sense of hearing to pick out every little detail, just like you would follow the melody of a song in your head. He is even able to pick out a lot of details, such as sounds generated by the game when a specific aciton is taking place that your or I wouldn't think twice about.
