version 1.40 alpha 2:
http://www.maazl.de/project/pm123/index.html#pm123_1.40
version 1.21 (9/24/2003):
http://www.step.polymtl.ca/~guardia/pm123.php
PM123 is a MP3, WAV, and CD Audio player, which is now open source. Some of the features include sharing of the sound card, playlist with drag/drop support, HTTP streaming, and the use of skins to change the program's look.
ftp://ftp.ptv.ru/pub/glass/pm123/
Source: OS2.org