audio.php

<?php
/**
 * Handle oEmbed and embedded media
 *
 * @param $content
 */
function the_featured_audio( &$content ) {
  $url = trim( array_shift( explode( "\n", $content ) ) );

	if ( 0 === strpos( $url, 'http://' ) ) {
		echo apply_filters( 'the_content', $url );
		$content = trim( str_replace( $url, '', $content ) );
	} else if ( preg_match ( '#^<(script|iframe|embed|object)#i', $url ) ) {
		echo $url;
		$content = trim( str_replace( $url, '', $content ) );
	}
}