Neptunia U .wwb files (SOLVED)

[sammyrms1]

So I just downloaded Neptunia U on Steam, decided to look through the sound files, and found some of them with a file format that I've never heard of (I think they are like .xwb's, but I'm not even sure).
Is there a program that extracts these types of files?
EDIT: The .wwbs are actually .xwbs, but in a different format. I deleted the extra 16 bytes that was in the .wsb, renamed it to .xsb, fixed the checksum, and extracted the files normally.

[Pingus!]

So I just downloaded Neptunia U on Steam, decided to look through the sound files, and found some of them with a file format that I've never heard of (I think they are like .xwb's, but I'm not even sure).
Is there a program that extracts these types of files?

Could you please upload some samples and link them a member can take a look!

[sammyrms1]

UPDATE: Turns out the .wwb files are actually .xwb files, but with a different file format. The .wsbs are modified .xsbs with an extra 16 bytes before the header.