I have a first generation iPod. I like option to turn on and off sounds, but the new mail sound is way too loud. I do, however, want a sound played when I get a new email. I SSH'd into /System/Audio/Library/UI sounds, but I did not find the new mail sound. I know the iPod can't play anything but the standard beeps, but I would like to use another sound like the unlock or the mail sent as my new email sound. How can I go about doing this?