/usr/bin/mpg123-alsa
/usr/bin/mpg123.bin
/usr/bin/mpg123-id3dump
/usr/bin/mpg123-jack
/usr/bin/mpg123-nas
/usr/bin/mpg123-openal
/usr/bin/mpg123-oss
/usr/bin/mpg123-portaudio
/usr/bin/mpg123-strip
/usr/bin/out123
You may install this package on Debian with
apt-get
install mpg123