Seriously Simple Podcasting: Add episodes series to episode meta data

functions.php

add_filter( 'ssp_episode_meta_details', 'ssp_series_title_in_meta', 10, 3 );
function ssp_series_title_in_meta ( $meta, $episode_id, $context ) {
  $series_title = get_the_term_list( $episode_id, 'series', 'Series: ', ', ' );
  $meta['series'] = $series_title;
  return $meta;
}