PM123 is an excellent open source PM based digital audio player for OS/2. It is capable of playing MP3's, WAV-files, Ogg Vorbis audio files, and audio CDs. PM123 supports audio streaming, plugins, skins, visualization and more! There is also excellent documentation in .INF format.
Originally developed by Samuel Audet and Taneli Leppa, it is now being
developed by Dmitry Steklenev. Credit is also given to Marcel Muller
for several fixes, and new features.
This latest version includes MANY new features, fixes, and improvements over version 1.31. See the history file for details.
PM123 version 1.32 beta 3 is available at:
ftp://ftp.ptv.ru/pub/glass/pm123/pm123-1_32_beta_3.zip
Source code for this version is also available:
ftp://ftp.ptv.ru/pub/glass/pm123/pm123-1_32_beta_3-src.zip
You can download a collection of skins here (many skins are also available on Hobbes):
ftp://ftp.ptv.ru/pub/glass/pm123/pm123-1_32_beta_1-skins.zip
You can find Plugins for PM123, and more information on PM123 here:
http://glass.ptv.ru/software/english/pm123.html
Source: Sander Nyman