Mpg123 is a fast and portable mpeg audio player for unix. it supports mpeg 1.0/2.0 layers 1, 2 and 3 (those famous "mp3" files).

for full cd quality playback (44 khz, 16 bit, stereo) a pentium, sparcstation10, dec alpha or similar cpu is required. mono and/or reduced quality playback (22 khz or 11 khz) is even possible on 486 cpus.

the main mpg123 nowadays already contains an output plugin for alsa by default. this is an empty dummy package to facilitate upgrades. it can be safely removed afterwards.