How to display meta box data using “Meta boxes as needed”

You might wish to try;

<?php

  $mykey_values = get_post_custom_values('my_key');
  foreach ( $mykey_values as $key => $value ) {
    echo "$key  => $value ('my_key')<br />"; 
  }

?>

Where my_key would be equal to songs.

Another example of what I might do in a situation where I am dealing with multiple values;

<?php

  global $post;
  $meta = get_post_custom_values($post->ID, 'songs', true );

   foreach ( $meta as $value ) {
      echo $value . "<br />"; 
    }

?>

Update: Try the following instead, which will cycle through each title and track of your ‘songs’ post meta.

global $post;
$meta = get_post_meta($post->ID, 'songs', true );
  foreach ( $meta as $key => $value ) {
      echo $value['title'] . "<br />";
       echo $value['track'] . "<br />";
    }