Example (short audio clip):
— Yep. So, in this episode Harp and I are gonna share our predictions about the future with you.
— Hmm, I'm so intrigued.
— So, this will be an interesting episode to listen back on in a couple of years and see if our predictions became true.
— Yes, we'll see how right we were.
I don't know how I should understand the phrasing listen back on. In particular, I have a problem with the preposition on there. Why not say listen back to? How can you listen on something? Is that even correct English?