AudioStream that lets the user play custom streams at any time from code, simultaneously using a single player. AudioStream that lets the user play custom streams at any time from code, simultaneously using a single player. Playback control is done via the [AudioStreamPlaybackPolyphonic] instance set inside the player, which can be obtained via [method AudioStreamPlayer.get_stream_playback], [method AudioStreamPlayer2D.get_stream_playback] or [method AudioStreamPlayer3D.get_stream_playback] methods. Obtaining the playback instance is only valid after the [code]stream[/code] property is set as an [AudioStreamPolyphonic] in those players. Maximum amount of simultaneous streams that can be played.