Custom UI and Player Sounds

[congeries]

I'm working on a custom story with a female PC, and am trying to figure out how to change the player's reaction sounds (breathing, panting, etc.) to custom sound files in a way that won't overwrite the original files and can be distributed in a custom story.

I've tried copying the .snt files (from, say, sounds > ui > hurt_pant.snt, etc.) into my custom story folder and then setting them to point to my files, but it doesn't seem to work. I imagine that changing the place the original .snt files point to would do the trick, but that would change them for the original game as well, which I don't want to do.

Has anyone tried this and figured it out?