Part of tutorial on Jayj.dk

gistfile1.php

/**
 * Format: box
 */
if ( 'box' == $format ) :

	$meta = get_post_meta( $id, 'download', true );
	$count_meta = get_post_meta( $id, 'download_count', true );

	// Start content
	ob_start();
?>

<div class="single-download" id="single-download-<?php echo intval( $id ); ?>">
        <?php
		// Get the title, either from shortcode or the title of the download
		$title = ( $title ) ? $title : 'Download ' .  $download->post_title;

		// Append count to title
		if ( $show_count === true )
			$title .= ' (Downloaded ' . number_format( $count_meta ) . ' times)';
	?>

 	<!-- Thumbnail -->
	<?php if ( $thumbnail !== false && has_post_thumbnail( $id ) ) { ?>
		<a href="<?php echo get_permalink( $id ); ?>" title="<?php echo esc_attr( $title ); ?>"><?php echo get_the_post_thumbnail( $id, 'thumbnail' ); ?></a>
	<?php } ?>

 	<?php if ( ! empty( $content ) ) { ?>
		<div class="download-text"><?php echo $content; ?></div>
	<?php } ?>

	<a href="<?php echo get_permalink( $id ); ?>" title="<?php echo esc_attr( $title ); ?>" class="download-link">Download</a>

 	<?php
		// Show count
		if ( $show_count === true )
			echo '<span class="download-count">' . sprintf( __( 'Downloaded %s times', 'twentyeleven' ), number_format( $count_meta ) ) . '</span>';
	?>
</div> <!-- .single-download -->

<?php
	// Return the content
	return ob_get_clean();

endif; // 'box' == $format