Give your DJ or band a list of songs that you absolutely do NOT want played, as well as a list of ones you would like to hear and those for special parts of the day.
Arrange some quiet time for just you and your fiance during the wedding planning process. A romantic date or a weekend away will give you a break from the stress.
Remind people who will be doing toasts to prepare something in advance. Tell them what you do NOT want to hear!