An MP3 player is a type of digital audio player that falls under the broader category of PMP devices. It is a small often weighing less than an ounce handheld device that use flash memory for storing MP3 files.
In addition to supporting the MP3 audio file format an MP3 player might also support additional file types such as Windows Media Audio (WMA), Waveform Audio (WAV), Music Instrument Digital Interface (MIDI), Advanced Audio Coding (AAC), Ogg Vorbis and other audio formats.