There are two (2) means of locating the sermon you want to listen to.
The easiest is to search for the sermons listed by page and icon below (just under "Media Archive"). Click on a sermon icon.
The title, speaker and date should appear under the player. Then click on the play ">" button. Enjoy!
The other means to select a sermon is to use the "Media Archive" drop-down buttons, searching by Date or by Title.