Can't unpack Carnevil BNK files

[SayakaMaizono]

Hey there.

I used this program to successfully open Bioshock 2 BNK's without issue, but I can't open any BNK's from Carnevil.

I think they might not actually contain any music, just metadata, or headers, but I'd still like to know what is in them. I also believe you can encrypt headers, but I have no idea if that's the case here.

Thank you for any assistance in this.