I have spent a full 24 hours attempting this for the past two days, but I'm throwing in the towel for now.
Essentially, I need help approaching and creating custom AudioStreams, namely for Opus. It HAS to be Opus for project reasons. I've managed to get it down to creating the classes, but I'd hit a major roadblock when attempting to override load_from_file and essentially decode the audio file for the application to comprehend.

In short, I'm stuck due to a lack of knowledge. Thank you in advance.

    Yuzurukyun what seems to be the problem, i dont understand

    You want to load stream? Godot can load ogg, mp3 and wav files no problem.

    What is opus?