Gonna leave this here in case it's useful to someone.
I once tried replacing some sounds with other sound effects replacing the wav files, but in-game it sounded like a horrible distorted mess.
Found out you can use audacity (or some similar audio editing software), and export the sound you want as "Other uncompressed files -> WAV -> Unsigned 8-bit PCM", then it sounds just fine in-game.
Tip for adding/replacing sound effects
Moderators: Gods, Imps, Architect, Guardian
I have tried this method and successfully changed some sound effects around.
For example;
https://www.youtube.com/watch?v=ghoZbRpwUkU
For example;
https://www.youtube.com/watch?v=ghoZbRpwUkU