Sermons In A Series Out Of Order

Taking over some church website duties after a recent staff member transition & my knowledge is definitely lacking. We have an old sermon series that has been uploaded and when accessing that series the sermons are out of order. There are no dates on any of them, and they are titled with “part #’s” so I am wondering how to have them displayed with “part 1” at the top descending to “part 9” at the bottom. Thanks!

The page I need help with: [log in to see the link]