Custom Audio is a mod for Valheim that lets you replace the audio files in the game with your own. You can use it with any sound effect and music track in the game. The only requirement is that the file name matches the name of the folder in which you placed it.

It has a config variable that lets you adjust the volume of the audio beyond the 60% cap the game seems to impose.

It also has a list of different sound effects that you can use. It will show you the name of the effect, the clip that you need to play, and the volume adjustment.

The mod is compatible with both the PC and the mobile versions of the game.