Media Upload

audio-player.php

add_filter("attachment_fields_to_edit", array(&$this, "insertAudioPlayerButton"), 10, 2);
			add_filter("media_send_to_editor", array(&$this, "sendToEditor"));

		/**
		 * Inserts Audio Player button into media library popup
		 * @return the amended form_fields structure
		 * @param $form_fields Object
		 * @param $post Object
		 */
		function insertAudioPlayerButton($form_fields, $post) {
			global $wp_version;
			
			$file = wp_get_attachment_url($post->ID);
			
			// Only add the extra button if the attachment is an mp3 file
			if ($post->post_mime_type == 'audio/mpeg') {
				$form_fields["url"]["html"] .= "<button type='button' class='button urlaudioplayer audio-player-" . $post->ID . "' value='[audio:" . attribute_escape($file) . "]' title='[audio:" . attribute_escape($file) . "]'>Audio Player</button>";
				
				if (version_compare($wp_version, "2.7", "<")) {
					$form_fields["url"]["html"] .= "<script type='text/javascript'>
					jQuery('button.audio-player-" . $post->ID . "').bind('click', function(){jQuery(this).siblings('input').val(this.value);});
					</script>\n";
				}
			}
			
			return $form_fields;
		}

		/**
		 * Format the html inserted when the Audio Player button is used
		 * @param $html String
		 * @return String 
		 */
		function sendToEditor($html) {
			if (preg_match("/<a ([^=]+=['\"][^\"']+['\"] )*href=['\"](\[audio:([^\"']+\.mp3)])['\"]( [^=]+=['\"][^\"']+['\"])*>([^<]*)<\/a>/i", $html, $matches)) {
				$html = $matches[2];
				if (strlen($matches[5]) > 0) {
					$html = preg_replace("/]$/i", "|titles=" . $matches[5] . "]", $html);
				}
			}
			return $html;
		}