Samsung SPH i700 - Manual (Page 43)

Chapter 3 - Personal Settings
43
12. Tap the check box next to Play Sound to designate a
notification sound for that event.
13. Tap the drop down arrow next to the available sounds
and select the desired sound.
Note: Use the player controls to listen to the sounds.
14. Select the other desired choices by tapping the check
boxes. When finished, tap to exit.