4t Calendar Reminder MP3 is a small application that reminds you of birthdays, anniversaries, appointments and any other event. It can organize events in a MS Outlook-like calendar and arrange them in a tree form using an Explorer-like interface. When an event approaches, 4t Calendar Reminder MP3 can remind you of it by showing an alarm message, sending e-mail, playing sounds (MP3, WAV, CD Audio), launching application, and opens Web/Ftp pages.