Hello @missionz3r0 - and welcome to the Forum!
I’ll start by sharing some general information, before some more expert folks jump-in to help you:
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A good starting point is the the “Play Sounds and Music” page of the documentation where you’ll find a few examples like Loading a sound from an ArrayBuffer and streaming sound captured from the microphone: Babylon.js Playground.
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Video streaming can be done using the videoTexture like explained in the solution of this thread.