More commonly referred to as an MP3 player, a digital audio player ("DAP") is a portable consumer electronics device that stores, organizes and plays audio files. Some DAPs are also referred as portable media players as they have image-viewing and/or video-playing support. Most DAPs are powered by rechargeable batteries, some of which are not user replaceable. Listening to music stored on DAPs is typically through earphones connected with a 3.5 mm jack. (-- Wikipedia)