//Attach Audio Source to the object and add audio file into Audio Clip parameter
AudioSource soundObject;
soundObject = GetComponent<AudioSource>();
soundObject.Play();
//Play Multiple Sound Files
AudioSource Audio1;
AudioSource Audio2;
AudioSource Audio3;
AudioSource[] audios = GetComponents<AudioSource>(); //Audio Sources are added from top to bottom order
Audio1 = audios[0];
Audio2 = audios[1];
Audio3 = audios[2];
Audio1.Play();
Audio2.Play();
Audio3.Play();