Good point ccexplore, look like this text is about 'Lemmings' (and not 'Lemmings 2'), but I have 'Lemmings 2 demo' archive with this text file included, really strange.
All of that is not so important. I was just afraid to have ability of using audio tracks with PC version of 'L2' in front of my nose, but to be too ignorant and miss to use it.
And about audio CD (audio tracks), this is not so much a problem. I can make one from Amiga mods played with 'Modplug'. It's not really a CD-Audio quality, but it's not bad at all. I have made 3 'new' versions of FM Towns port of 'L2' with music saved as audio tracks (music is taken from Amiga, Archimedes and SNES ports).
Simon, I have image of PC CD-ROM with 'L1' and 'L2' games (without audio tracks, as you said). 'L2' on that CD is 'normal' PC version, not capable to use audio tracks, but 'L1' is a CD-ROM version. Problem is, there is nothing to be played (as audio tracks) on that CD. There are (at least) two more PC versions (not much different to each other) of 'L1' together with 'ONML' on the same CD, with audio tracks included. Audio tracks just contains 'L1' music, and 'ONML' use the same tracks.