Ripping from One-Punch Man A Hero Nobody Knows

[Unknowni123]

Heyo. I've been trying to rip the sound effects from One-Punch Man: A Hero Nobody Knows for a while now. It seems all of the files are stored in two giant ~3-4 GB .cpk files. When I open them with quickbms using the usual .cpk script, I get thousands of all these generic files with wild names of seemingly-random numbers and letters. I've looked into other Spike Chunsoft games, but they seem to either be stored differently or there's just not enough information about them yet.

Any way I could put these into usable formats, identify them, and find what I'm looking for?

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Here are some random sample files I grabbed. I've now noticed that their naming convention does follow a naming convention of some sort, since it is mostly numbers but then switches to names starting with a-f about halfway down the list.

And here's an image of the folder I output the files into:
https://i.imgur.com/jXtJDpn.png