mpg321: mpg321 (a command-line mp3 player) mpg321: mpg321: mpg321 is a free command-line mp3 player, which uses the mad audio mpg321: decoding library. mpg321 is written to be a drop-in replacement for mpg321: the mpg123 player for front-ends such as gqmpeg and programs which use mpg321: mpg123 to decode mp3 files (like gtoaster, and other CD-recording mpg321: software). mpg321: mpg321: mpg321 requires libao.so from the oggutils package. mpg321: mpg321: