Changes from 0.2 to 0.3 :
* Now MP3 waveforms are visible in Audio Editor.
* MMIOM_IDENTIFYFILE does not claim that all data is valid mp3.
With the codecs the OS/2 mulitmedia system is able to play (and convert to WAV) MP3 and OGG Vorbis files without any additional software.
http://www.math.berkeley.edu/~roconnor/MMIOMP3/
Source: