@script RequireComponent(AudioSource)
    // Prints the elapsed time in samples the audio
    // source has been playing.
    // Press "Return" to start the song and see how the
    // time sample gets restarted..
    function Update() {
        if(Input.GetKeyDown(KeyCode.Return)) {
            audio.Stop();
            audio.Play();
        }
        Debug.Log(audio.timeSamples);
    }

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
public class example : MonoBehaviour {
    void Update() {
        if (Input.GetKeyDown(KeyCode.Return)) {
            audio.Stop();
            audio.Play();
        }
        Debug.Log(audio.timeSamples);
    }
}

import UnityEngine
import System.Collections

[RequireComponent(AudioSource)]
class example(MonoBehaviour):

    def Update():
        if Input.GetKeyDown(KeyCode.Return):
            audio.Stop()
            audio.Play()
        Debug.Log(audio.timeSamples)