Hi @Rick41! Thanks for posting.
This feature should be available on your Cox device. Is the button missing completely or is it greyed out for specific tracks?
Since ad-supported Pandora and Pandora Plus are bound by our existing license to stream some of our tracks in a radio format, a replay option may not always be available.
These types of tracks will either have the replay button grayed out, or you will receive a message saying, "Sorry, this track cannot be replayed" upon attempting to replay the song.
Can you take a picture of what you're seeing on your TV to share with me? You can post it here in this thread.