I know I can't. And I know Apple have make it so I can't. What I'd like to ask your opinions about it WHY can't I? What do you think the reasons are that a group of people would sit down at a design/planning meeting and deliberately decide to not let me (the user) change the sound that I get when I receive an email? What thought processes were they going through when it was decided to deliberately fix it and allow no customisation? I can't seem to fathom why a group of people would sit around a table and deliberately impose such a limitation.