<?php
    $post_id = get_the_ID();
    if(function_exists('yarpp_related'))
        yarpp_related(
        array(
            'post_type' => array('download'),
            'past_only' => false,
            'weight' => array(
                'body' => 1,
                'title' => 2, // larger weights mean this criteria will be weighted more heavily
                'tax' => array(
                    'download_tag' => 1,
                    // put any taxonomies you want to consider here with their weights
                    'download_category' => 1,
                )
            ),
            'limit' => 5,
            /*'require_tax' => array(
                'download_tag' => 1 // for example, this requires all results to have at least one 'post_tag' in common.
            ),*/
            // The threshold which must be met by the "match score"
            //'threshold' => 2,
            'order' => 'score DESC'
            )
        );
            // 'template' 'limit' 'order'
?>