How to make menu which is able to list audio files, then load chosen one into the AudioSource in the scene

I have never made a menu in Unity before so go easy on me.

I’m recreating the game AudioSurf and need a menu which can list all the audio files in the music resource folder so the player can pick which song they want to play.
That song then needs to be passed to the AudioSource component in the game scene.

Any help on these topics is greatly appreciated, thank you.

Around halfway through this video, he creates an Audio Manager which you can either follow along with or download for use.