Let servers stream custom audio to clients without a pack reload

Jukeboxes and note blocks already handle positional audio beautifully — nearby players hear the same sound at the right volume and direction. The problem is that the content is locked to files already installed on the client.

Today, a server that wants to play custom audio must push a resource pack, which forces a full "Reloading resource packs" freeze on every player. This makes any dynamic audio feature unusable in practice.

Request: an API for servers to send audio data to clients at runtime and play it at a world position, without triggering a resource pack reload. Even a modest version would be enough — for example, a limited number of streaming channels, a size or duration cap, and audio that is discarded when the player leaves the area.

Why it matters: shared listening is a social experience. Building a jukebox in a base and having everyone in the room hear it together is the point. Right now this only works for the handful of discs that ship with the game.

Server owners already solve this with third-party mods, which proves both the demand and the feasibility — it just requires every player to install a mod, which splits communities.