Changing sounds

Select the Audio Manager prefab in the Project window

Expand the Audios List in the Inspector window

Select the audio you want to remove

Drag and drop an audio clip from Project window to the Audios list in the Inspector window

Then right-click on the Audios list and select Modified Component and click Apply to Prefab ‘AudioManager’

Alternatively, you can open the prefab and add, remove, or edit any of the amounts then save it