By default, Outlook plays a generic sound (from a file called reminder.wav) when a reminder for an event (appointment, meeting, or task) fires. The following explains how to change this sound to something a little more personalized.
While on the event's form, click the Reminder option.
To the right of that Reminder option is a drop-down list that enables you to specify the amount of time before the event is scheduled to start, to display a message and play a sound. Select this option and specify the amount of time.
Click the button with a speakerlike icon on it. This displays the Reminder Sound dialog box (see Figure 5-13).
Figure 5-13. You can ...