...Actually, I'm pretty sure I had a Windows version with a level select menu, so I could skip levels. Does Winlemm have that?
IIRC, it has a level select menu (instead of passwords), but you have to unlock the levels as normal.
That's not the version I had, then, unless something broke or my father did something. (I wouldn't be surprised either way.)
[Of course, who knows if they might be another version of WinLemm out there that does do CD audio track music?]
It may very well be that I got WinLemm separately from the CD. (If I can find the CD and it's not irreparably scratched, I'll post some information and see if I can rip it.)
The version I had also had ONML, so if Custlemm came from a CD version of ONML, it's probably at least something related to the version I have.
(also, finlay, since I'm a raging linguistics nerd: Varg Vikernes does the capital You thing, and his native language is Norwegian. I'm not even sure if he speaks German)