I need an mp3 player (or some solid-state device) to store about 200 tunes saved from CDs, and having a keypad that will allow me to select any one tune at a time. It doesn't have to be portable. Battery or mains powered. A simple display just showing the number of the tune would be enough. Play and Stop functions sufficient. If this turns out to be a construction project I'd appreciate and advice, or reference to an existing similar project.