On Saturday I posted information about Pr. Todd Wilken preaching at Peace Lutheran Church (8:00 AM Divine Service) and being broadcast on KFUO-AM. It appears that the KFUO-AM archive website does not yet have this service and sermon posted. (This would not be abnormal. When Divine Services from Hope, St. Louis were broadcast a couple of years ago, during Lent & Easter, it routinely took a week or so for those recordings to be posted to the website.)
At any rate, you can also listen to Pr. Wilken's sermon at these two places:
Website of Peace Lutheran Church
Pr. Wilken's page at Wittenberg Trail.