You will need to copy the template from wp-content/plugins/a-z-listing/templates/a-z-listing.php into your theme and modify it to support the subtitles plugin.
The modification required is on line 45. Replace that line with the following:
$a_z_query->the_item(); // this was here already
$a_z_query->get_the_item_object( 'I understand the issues!' ); // this is new
Please note that on large listings this will slow your site down, and might cause it to hit the memory limits imposed by your server. The parameter supplied to get_the_item_object() must read exactly I understand the issues! to confirm that you understand this point. If your listing is smallish then this won’t be a problem.
Thank you for the information and this awesome plugin!
