Sets a channels pan position linearly. Only works for 2D clips.

-1.0 to 1.0. -1.0 is full left. 0.0 is center. 1.0 is full right. Only sounds that are mono or stereo can be panned. Multichannel sounds (ie >2 channels) cannot be panned.

	// Switches sound from left to right everytime the user presses space
	@script RequireComponent(AudioSource)
	var panOnLeft = false;
	function Start()
	{
		audio.pan = 1;
	}
	function Update() {
		if(Input.GetKeyDown(KeyCode.Space)) {
			if(panOnLeft) {
				panOnLeft = false;
				audio.pan = 1;
			} else {
				panOnLeft = true;
				audio.pan = -1;
			}
		}
	}

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
public class Example : MonoBehaviour {
    public bool panOnLeft = false;
    void Start() {
        audio.pan = 1;
    }
    void Update() {
        if (Input.GetKeyDown(KeyCode.Space))
            if (panOnLeft) {
                panOnLeft = false;
                audio.pan = 1;
            } else {
                panOnLeft = true;
                audio.pan = -1;
            }
        
    }
}

import UnityEngine
import System.Collections

[RequireComponent(typeof(AudioSource))]
public class Example(MonoBehaviour):

	public panOnLeft as bool = false

	def Start() as void:
		audio.pan = 1

	def Update() as void:
		if Input.GetKeyDown(KeyCode.Space):
			if panOnLeft:
				panOnLeft = false
				audio.pan = 1
			else:
				panOnLeft = true
				audio.pan = (-1)