If you want to change sounds for all profiles:
Go to scripts\Thor Files\Sounds\Default and replace a sound with a new sound, keeping the same filename.
Only .WAV files are supported.

If you want to use a sound for a specific profile:
For example, we have a profile in the main directory called "Jane Foster.ini".
Create a new folder called "Jane Foster" in the Sounds directory.
Ex: scripts\Thor Files\Sounds\Jane Foster
Paste your new sound into that folder and rename it to match a sound in the Default folder.
Ex: scripts\Thor Files\Sounds\Default\3# SPINNING MJOLNIR LOOPABLE.wav
will be replaced by
scripts\Thor Files\Sounds\Jane Foster\3# SPINNING MJOLNIR LOOPABLE.wav
when using the Jane Foster profile.
Only .WAV files are supported.