Hi take a look at the picture on the right. Go to that menu(Main menu screen). If you look at the bottom of that menu you will see entertainment. Select entertainment. Now on your I drive you will see a menu that resembles picture on the left. Next select memory. Once you have done that select tone an adjust the necessary settings to your likings. I hope that helps.
Below is a video to try an assist you further in reaching the necessary settings. Start at 8:08 an watch until 8:26. Good Luck.

http://www.youtube.com/watch?v=zV95CuOND8E&feature=relmfu