Play Base64 encoded audi file in java

I have a string that contains a base64 encoded mp3 file. I want to decode that file then play it.

 File file = new File("song.wav");
  byte[] bytes = FileUtils.readFileToByteArray(file);

  String encoded = Base64.encodeToString(bytes, 0);                                       
  byte[] decoded = Base64.decode(encoded, 0);
  AudioInputStream audioIn = AudioSystem.getAudioInputStream(/*what do i do here?*/);
  Clip song = /*what do i do here?*/;
  song.start;

I now i have the byte array ready. How can I use this decoded byte array to play music using clip or audioinputstr