gotmuck,
Thanks for getting in touch! First of all, you’ll need to perform a template override on ‘views/pro/widgets/list-widget.php’. If you’re unsure of how to do this, check out our themer’s guide.
Once you’ve overridden that file, you should be able to display your custom field by using the ‘tribe_get_custom_field‘ function like this:
<?php echo tribe_get_custom_field( 'Your Custom Field Label' ); ?>
Give that a try and let me know if it gets you started in the right direction. Thanks! 🙂
-Casey-