Plupload on frontend

In order to show a gallery you can use this code:

$post_id = get_post_meta(get_the_ID(), 'MY_FIELD_NAME', false);
$excagriqID = get_the_ID();
$images = rwmb_meta( 'MY_FIELD_NAME','type=image');
foreach ( $images as $image )
{
	echo "<div class='item'>
		<a href='".$image['full_url']."' title='".$image['title']."' rel='". $excagriqID ."' class='thickbox'>
			<img src='".$image['url']."' width='".$image['width']."' height='".$image['height']."' alt='".$image['alt']."' />
		</a>
	</div>";
}

In alternative, if you want to use shortcodes to show the gallery:

$images = rwmb_meta( 'MY_FIELD_NAME','type=image');
$images = array_keys($images);
echo do_shortcode( "[gallery ids='".implode( ',', $images )."']" );

@landwire: If you require assistance then, as per the Forum Welcome, please post your own topic.