Audiofiles are more than welcome to give this a go. This is beyond my current expertise.I have a suggestion regarding the audio version of the PS1 versus the PSP. There is a program for modifying voices that can bring the lines of the PSP closer to make the voices very similar to those of the PS1. So it could be possible to put the lines that were missing in the PS1 version coming from the PSP. I see people doing this a lot at Mugen to invent new lines for their characters that the voices are practically identical to the original. Perhaps this trick would work for the PS1 version of the voices. With that, Saturn could have a whole cast of voices in an audio version of the PS1's English.