Those scans I'f I'm not mistaken are the ones I did originally. What I found were just the two discs as seen (scanned). They weren't even in jewel cases from what I remember, just disc only.
Regarding the directory included on the discs, sadly I'm no more than an Amiga gamer and cannot say whether it was a file structure for CD32 or not. You'll need an expert to take a look at the files for you, what better place than here?
Regarding Oscar CD32 too, I would love to know the answer to this too.