MP3 is the name (and frequently the file [extension]) for files
containing data formatted in a commonly used format. It is used to
digitally represent audio files compressed using the MPEG audio layer 3
compression technology. 

See [http://www.answers.com/mp3&r=67] and [http://en.wikipedia.org/wiki/MP3] for some
additional information on the subject.

Note that MP3 is a lossy compression format. 

<<categories>> Glossary | Music