Actually, got it figured out myself. Seems I need to learn more PHP before I start messing around with things!
What I wanted to do was make the featured image link to the post instead of the picture, or ‘attachment’ page.
Got something like this:
$thumb_id = featured image (thumbnail) id
$link = What you want the link to be.
update_post_meta( $thumb_id, _gallery_link_url, $link);
It works for me. ??
Thanks for the great plugin! <3
