When we talk about books we haven't read yet, we call them unread books.
When we talk about movies and other videos we haven't watched yet, we call them unwatched ones.
But what about podcasts, songs and other audio? I have googled for "unlistened", but it seems this word is not really popular in this context, and instead it is more common to call such podcasts, songs, and other audio "unplayed". Is it really so?