Any AudioManager is a global plugin for managing any audiotype (Omni, 2D, and 3D) efficiently in Godot. It automatically create dictionary and cache, and can be called with simple function.

How to use:

• Enable Plugins Either Through Project Settigns or Asset Store Tab then Plugins, The AudioManager scene will be AutoLoad.
• Open AudioManager scene in folder addons/any_audio_manager.
• Click AudioManager Node
• Create New AudioLibrary
• Pick Audio Directory, then it will automatically index all of the audios(currently this format only: .wav, .ogg, .mp3, .flac, .opus) in the folder or child folder.
• Now to use it on any script, you can just try this(if there is audio named "click" in your audio directory):

func _ready() -> void:
    AudioManager.play_sfx("click")

• Experiment with other settings in the AudioManager and have fun!

List of functions:

is_playing(key: StringName) -> bool

play_sfx_once(key: StringName, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_sfx(key: StringName, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_sfx_2d(key: StringName, pos: Vector2, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_sfx_3d(key: StringName, pos: Vector3, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_music(key: StringName, loop: bool = true, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_music_2d(key: StringName, pos: Vector2, loop: bool = true, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

play_music_3d(key: StringName, pos: Vector3, loop: bool = true, volume: float = 0.0, pitch: float = 1.0, audio_setting_index: int = -1) -> void

stop_music() -> void

stop_by_key(key: StringName) -> void

stop_all_active() -> void  

Or if you want to use audio setting or other things, you can modify the script, add wrapper function, and use the audio setting index :

_execute_play(key: StringName, type: AudioType, bus: StringName, pos: Variant, volume: float = 0.0, pitch: float = 1.0, loop: bool = false, audio_setting_index: int = -1) -> void  

License is CC0, credit is appreciated but not required.