MP2 is a short form of
MPEG Audio Layer 2, and it is also used as a
file extension for files containing audio data of this type. While it has largely been superseded by
MP3 for
PC and
Internet applications, it remains a dominant standard for audio broadcasting as part of the
DAB digital radio[?] and
DVB digital television standards.
For details and a short historic introduction to MP2, see MP3.