Get last 5 episodes to show if "rss" custom field has been filled in. If not, output other message. See Google+ https://plus.google.com/u/0/116025569345227867532/posts/GcWYWECU7pd

episodes-feed.php

<?php // Google+ post https://plus.google.com/u/0/116025569345227867532/posts/GcWYWECU7pd
include_once(ABSPATH.WPINC.'/feed.php');
{
$grss=get_post_meta($post->ID, 'rss', true);
$rss = fetch_feed($grss);

if (!is_wp_error($rss)) { // Checks that the object is created correctly
	$maxitems = $rss->get_item_quantity(5);
	$rss_items = $rss->get_items(0, $maxitems);
}

if (!empty($maxitems)) {
?>
  <ol>
	<b><?php _e( 'Last Five Episodes', 'textdomain' ); ?></b>
	
	<?php
	// Loop through each feed item and display each item as a hyperlink.
	foreach ( $rss_items as $item ) : ?>
	<li>
		<a href="<?php echo $item->get_permalink(); ?>' title='<?php echo __( 'Posted ', 'textdomain' ) . $item->get_date( 'j F Y | g:i a' ); ?>">
			<?php echo $item->get_title(); ?>
		</a>
	</li>
	<?php endforeach; ?>
  </ol>

<?php } else { ?>
	
	<ul><li><?php _e( 'No RSS Feed', 'textdomain' ); ?></li></ul>

<?php }

} ?>