sample output

testimonial-meta-output.php

<?php

global $testimonial_metabox;

$testimonial_bg = $testimonial_metabox->get_the_value( 'background' );

$testimonials = $testimonial_metabox->get_the_value( 'testimonials' );

?>

<?php foreach ($testimonials as $testimonial) { ?>
<div class="<?php echo $testimonial_bg; ?>">
	<?php echo wpautop( $testimonial['content'] ); ?>
	<?php echo $testimonial['name']; ?><br/>
	<?php echo $testimonial['audio']; ?>
</div>
<?php } ?>

<!-- OR -->

<?php

global $testimonial_metabox;

$testimonial_bg = $testimonial_metabox->get_the_value( 'background' );

while( $testimonial_metabox->have_fields( 'testimonials' ) )
{ 
	echo '<div class="' . $testimonial_bg . '">';
	echo wpautop( $testimonial_metabox->get_the_value( 'content' ) );
	echo $testimonial_metabox->the_value( 'name' );
	echo '<br/>';
	echo $testimonial_metabox->the_value( 'audio' );
	echo '</div>';
}

?>