not sure if it will work with these files, (this is hoisted from another forum, relating to ledu) but apparantly you need a new folder in the client called music, with the tracks in and a soundlist in there with eg:
;map folder track
0 Music\o.mp3
2 Music\2.mp3
11 Music\11.mp3
GHWI001 Music\GHWI001.mp3
but also this in your data folder: MepgPlay.dll, not sure if 2.3 will read that dll, from 1.9 files,, a bit like the zplugofengine.dll one for custom commands,, TD did that differently