Set an alarm clock that will play an MP3 ... This application sits in the system tray at the bottom right ... bottom right corner of the screen.

Remind yourself of anything you want ... from "Control Panel -> Add/Remove Programs".

Clock-on-Desktop is a fully flexible and highly customizable clock for desktop with skin and sound support. It has a rich set of options and managements and this clock will look fine on your desktop. It can display unlimited differently looking clocks in different GMT timezones. Each clock can show any timezone you require. It has more than 30 skins: classic clocks, modern clocks, transparent clocks, Vancouver 2010 olimpic clock and much much more.