How to get local files on playlist to be able to play on Playstation

[dangerkid76]

I've recently downloaded some music that Spotify doesn't offer to put on playlists, however, when I tried to use my Playstation to play the downloaded songs it would skip them and if I were to select the exact song I want to play it would skip to the nearest non-downloaded song. So is there a way to listen to local file songs on a Playstation.