I have some simple bird song attached to my character controller (Audio Source) and wanted to know if there was a way to change the current audio source when a trigger is hit to something else. For instance:

Bird song is playing > When trigger is hit > Bird song stops > Zombie Sound effect takes over.

 function OnControllerColliderHit (hit : ControllerColliderHit)
    {
    if (hit.gameObject.tag == "Cube")
audio.stop;
audio.change = resources.load ("From File");

Or something similar.