@Conn @Relikk mystery solved, you both are correct. I had the normal version of ssf2 which was why I wasn't able to patch with Rev1/Relikks patch. I was able to find the rev1 version of ssf2 and it patched successfully. @Relikk thanks for sending that link, it helped alot. As always, thanks to both!

@Relikk, something I'm noticing with the MSDOS CD pack you created. Not sure but there appears to be some loss in details with the recording. Not sure if it has anything to do with the conversion process to .pcm but I'm noticing the tracks appear to be at a lower quality sound. I can send you recording and can compare.
https://mega.nz/file/c5l1wawa#X0HjJCfMJRyBKS1EzGoY7TGszK3NvGziYsUp4flORj0

They seem identical apart from the bit depth of the files you provided, which only affects the noise floor and is barely audible at 16-bit and up. The original files from the CD would have been 16-bit anyway, so I'm not entirely sure where you got those. Unless they're source files from the composers/devs, then someone has pointlessly converted them to a higher bit depth for absolutely no quality gain.

Besides all that, PCM is a lossless format. MSU1, the same as CD audio, requires 16-bit/44.1kHz files. Even if they were from the source they'd need to be converted down to 16-bit anyway, which is what you'd find on the retail CD.

the recordings are straight from the retail cd. The cool thing about the cd is you don't need to install the game to listen to the tracks, you can listen to the tracks as an audio cd. So, I ripped them awhile ago. I'm no sound expert but I do notice more details in the cd than pcm. I don't recall what I ripped the cd at but if they need to be down converted then it would be pointless as you said.

It's a weird one, but from my tests all of your files have lost details beyond the 16kHz range, whereas the files I used retain theirs. The loss of frequencies beyond a certain range suggests that they were converted to a lossy format before.

Your Ken.wav file in two separate analysers:
https://i.imgur.com/sh6X9Rr.png
https://i.imgur.com/9edZvcV.png

My Ken audio file:
https://i.imgur.com/KClB7Lf.png
https://i.imgur.com/eGn5kKy.png

I think you might need to re-rip your CD again using something like EAC or dBpoweramp.

@chikawong, out of my experience, trust in relikk's auditive skills. His avatar matches his abilities, he has bat like ears

I hope this discussion will end at one time and the set is acknowledged in first post