Audio file compressed with MPEG Layer II compression; reduces the file size with having minimal effect on the overall sound quality; based on an the MPEG-1 audio-coding standard and was later updated for the MPEG-2 specification.
Program(s) that open mpa files
Mac / Windows: Apple QuickTime Player; Apple iTunes; Microsoft Windows Media Player
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/mpa
