It might have taken a while to get a response, but thank you for it..!
For the time being, I have resubscribed to apple music and been using this method. I think I will find local music to be a little more peace-of-mind always, but it's fine this way. I appreciate you acknowledging it at the least, even if it is not planned at the moment, I still hope in the future you get around to making it more of a general-purpose player which can support local files too.
Thank you for all the work over the years!