Find "Message alert tone"
Press the Menu key.
Press Settings.
Press Profiles.
Press the active profile.
Press Personalise.
Press Message alert tone.
Select message tone
Go to the required folder.
Press the different message tones to listen to them.
Press the different message tones to listen to them.
Once you've found a message tone you like, press the confirm icon.
Exit
Press the Menu key to return to standby mode.