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.

this package used to contain an executable specially optimized for i486 processors, but nowadays just depends on the generic package mpg123. it is an empty dummy package to facilitate upgrades and can be safely removed.