Hey, I was wondering if you could make the script (or a different script based on that) that extracts ps3_bgm_wave_bank.mwb aswell (located at /sound).
It seems that the script you have already provided kinda works on them as is but it can't recognize on 1/3rd of files their start or end points or something. Some others though are perfectly extracted and are compltely unaffected by the error.
Important information: this site is currently scheduled to go offline indefinitely by end of the year.