how can i make prefabs keep there inspector varibles

Can you explain the situation a bit more specifically please? Where are these prefabs and where is the audiosource that you drag to them? How do you make copies of them and do the variables lose values when you press play or when making copies?

you can always show the important parts of the script ;-) I think you might have set the audiosource to null at initialization, awake or start, but some code snippet would really help ;-)

Are you sure about that? Everytime i drag a copy of one of my prefabs into a scene, they keep the same variables as the original gameobject.