What exactly is the goal? I think you will certainly not want to play more than 3 audio files at the same time. So you only need 3 Player components and only need to change Player.Source each time.
I also have dozens of audio files in some of my apps, of which I play 3 simultaneously (voice, music and nature sounds).
However, if you actually want to play many audio files at the same time, which components or extensions (Player, ExoPlayer, TaifunPlayer) have you tried?