Mute Some But Not All Sound?

I see that the upcoming upgrade will allow the user to dim the lighting on the iPhone. It would also be great if an option allowed you to mute the sound(s) notifying you of incoming e-mail or phone calls (which certainly can disrupt meditation) while allowing for the sound of the bell notifying you of the end of the meditation. Whether this is possible, I dont know, but the sound of the bell is pleasing (while, of course, the sound of an e-mail message being delivered to your iPhone during meditation is not welcome) (understanding, of course, there is an option to place the notification on vibrate).

NONICKNAME5 about Meditation Timer