If you want to change the iPod Touch's normal sounds start by going to the iPod Touch's Settings just as you did when affecting brightness. Go to the top of the third section and select General, which is right above Music. Once you are in the General iPod Touch Settings select Sounds from the second section, sitting right below Wallpaper. In the Sounds Settings section you can start by setting the general bar of sound that you want on your iPod Touch's sounds. This will determine how loud all the sounds are. It is normally kept above seventy five percent, but you may want to bring it lower. Next there are switches for On and Off for a series of different iPod Touch functions that have accompanying sounds. These functions are New Mail, Sent Mail, Calendar Alerts, Lock Sounds, and Keyboard Clicks. You may want to limit how many of these have sounds associated.