function posttools_mp3link($args) {
	ob_start();
	?>
	<span class="mp3link"><a href="<?php echo $args['what']; ?>" title="<?php echo htmlspecialchars($args['track'], ENT_QUOTES); ?>"><?php echo $args['track']; ?></a></span>
	<?php
	$content = ob_get_content();
	ob_end_clean();
	return $content;
}