diff --git a/addons/sound_manager/abstract_audio_player_pool.gd b/addons/sound_manager/abstract_audio_player_pool.gd
index 7353ffa..468739f 100644
--- a/addons/sound_manager/abstract_audio_player_pool.gd
+++ b/addons/sound_manager/abstract_audio_player_pool.gd
@@ -9,7 +9,7 @@ var available_players: Array[AudioStreamPlayer] = []
 var busy_players: Array[AudioStreamPlayer] = []
 var bus: String = "Master"
 
-var _tweens: Dictionary = {}
+var _tweens: Dictionary[AudioStreamPlayer, Tween] = {}
 
 
 func _init(possible_busses: PackedStringArray = default_busses, pool_size: int = default_pool_size) -> void:
@@ -52,7 +52,7 @@ func prepare(resource: AudioStream, override_bus: String = "") -> AudioStreamPla
 func get_available_player() -> AudioStreamPlayer:
 	if available_players.size() == 0:
 		increase_pool()
-	var player = available_players.pop_front()
+	var player : Variant = available_players.pop_front()
 	busy_players.append(player)
 	return player
 
@@ -76,7 +76,6 @@ func mark_player_as_available(player: AudioStreamPlayer) -> void:
 		busy_players.erase(player)
 
 	if available_players.size() >= default_pool_size:
-		available_players.erase(player)
 		player.queue_free()
 	elif not available_players.has(player):
 		available_players.append(player)
@@ -94,6 +93,7 @@ func increase_pool() -> void:
 	add_child(player)
 	available_players.append(player)
 	player.bus = bus
+	@warning_ignore("return_value_discarded")
 	player.finished.connect(_on_player_finished.bind(player))
 
 
@@ -107,12 +107,15 @@ func fade_volume(player: AudioStreamPlayer, from_volume: float, to_volume: float
 	player.volume_db = from_volume
 	if from_volume > to_volume:
 		# Fade out
+		@warning_ignore("return_value_discarded")
 		tween.tween_property(player, "volume_db", to_volume, duration).set_trans(Tween.TRANS_CIRC).set_ease(Tween.EASE_IN)
 	else:
 		# Fade in
+		@warning_ignore("return_value_discarded")
 		tween.tween_property(player, "volume_db", to_volume, duration).set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
 
 	_tweens[player] = tween
+	@warning_ignore("return_value_discarded")
 	tween.finished.connect(_on_fade_completed.bind(player, tween, from_volume, to_volume, duration))
 
 	return player
@@ -125,6 +128,7 @@ func _remove_tween(player: AudioStreamPlayer) -> void:
 	if _tweens.has(player):
 		var fade: Tween = _tweens.get(player)
 		fade.kill()
+		@warning_ignore("return_value_discarded")
 		_tweens.erase(player)
 
 
@@ -137,7 +141,7 @@ func _on_player_finished(player: AudioStreamPlayer) -> void:
 	mark_player_as_available(player)
 
 
-func _on_fade_completed(player: AudioStreamPlayer, tween: Tween, from_volume: float, to_volume: float, duration: float):
+func _on_fade_completed(player: AudioStreamPlayer, _tween: Tween, _from_volume: float, to_volume: float, _duration: float) -> void:
 	_remove_tween(player)
 
 	# If we just faded out then our player is now available
diff --git a/addons/sound_manager/ambient_sounds.gd b/addons/sound_manager/ambient_sounds.gd
index a8f38f1..47dc547 100644
--- a/addons/sound_manager/ambient_sounds.gd
+++ b/addons/sound_manager/ambient_sounds.gd
@@ -2,12 +2,13 @@ extends "./abstract_audio_player_pool.gd"
 
 
 func play(resource: AudioStream, fade_in_duration: float, override_bus: String = "") -> AudioStreamPlayer:
-	var player = get_busy_player_with_resource(resource)
+	var player := get_busy_player_with_resource(resource)
 
 	# If it's already playing then don't play it again
 	if is_instance_valid(player): return player
 
 	player = prepare(resource, override_bus)
+	@warning_ignore("return_value_discarded")
 	fade_volume(player, -80.0, 0.0, fade_in_duration)
 	player.call_deferred("play")
 	return player
@@ -19,6 +20,7 @@ func stop(resource: AudioStream, fade_out_duration: float = 0.0) -> void:
 
 	for player in busy_players:
 		if player.stream == resource:
+			@warning_ignore("return_value_discarded")
 			fade_volume(player, player.volume_db, -80, fade_out_duration)
 
 
@@ -27,4 +29,5 @@ func stop_all(fade_out_duration: float = 0.0) -> void:
 			fade_out_duration = 0.01
 
 	for player in busy_players:
+		@warning_ignore("return_value_discarded")
 		fade_volume(player, player.volume_db, -80, fade_out_duration)
diff --git a/addons/sound_manager/music.gd b/addons/sound_manager/music.gd
index 6f6b7b3..adf8ad9 100644
--- a/addons/sound_manager/music.gd
+++ b/addons/sound_manager/music.gd
@@ -7,18 +7,21 @@ var track_history: PackedStringArray = []
 func play(resource: AudioStream, position: float = 0.0, volume: float = 0.0, crossfade_duration: float = 0.0, override_bus: String = "") -> AudioStreamPlayer:
 	stop(crossfade_duration * 2)
 
-	var player = get_busy_player_with_resource(resource)
+	var player := get_busy_player_with_resource(resource)
 
 	# If the player already exists then just make sure the volume is right (it might have just been fading in or out)
 	if player != null:
+		@warning_ignore("return_value_discarded")
 		fade_volume(player, player.volume_db, volume, crossfade_duration)
 		return player
 
 	# Otherwise we need to prep another player and handle its introduction
 	player = prepare(resource, override_bus)
+	@warning_ignore("return_value_discarded")
 	fade_volume(player, -80.0, volume, crossfade_duration)
 
 	# Remember this track name
+	@warning_ignore("return_value_discarded")
 	track_history.insert(0, resource.resource_path)
 	if track_history.size() > 50:
 		track_history.remove_at(50)
@@ -38,12 +41,13 @@ func stop(fade_out_duration: float = 0.0) -> void:
 	for player in busy_players:
 		if fade_out_duration <= 0.0:
 			fade_out_duration = 0.01
+		@warning_ignore("return_value_discarded")
 		fade_volume(player, player.volume_db, -80, fade_out_duration)
 
 
 func pause(resource: AudioStream = null) -> void:
 	if resource != null:
-		var player = get_busy_player_with_resource(resource)
+		var player := get_busy_player_with_resource(resource)
 		if is_instance_valid(player):
 			player.stream_paused = true
 	else:
@@ -53,7 +57,7 @@ func pause(resource: AudioStream = null) -> void:
 
 func resume(resource: AudioStream = null) -> void:
 	if resource != null:
-		var player = get_busy_player_with_resource(resource)
+		var player := get_busy_player_with_resource(resource)
 		if is_instance_valid(player):
 			player.stream_paused = false
 	else:
@@ -78,5 +82,6 @@ func get_currently_playing() -> Array[AudioStream]:
 func get_currently_playing_tracks() -> PackedStringArray:
 	var tracks: PackedStringArray = []
 	for player in busy_players:
+		@warning_ignore("return_value_discarded")
 		tracks.append(player.stream.resource_path)
 	return tracks
diff --git a/addons/sound_manager/sound_effects.gd b/addons/sound_manager/sound_effects.gd
index 30e8008..bf05132 100644
--- a/addons/sound_manager/sound_effects.gd
+++ b/addons/sound_manager/sound_effects.gd
@@ -2,7 +2,7 @@ extends "./abstract_audio_player_pool.gd"
 
 
 func play(resource: AudioStream, override_bus: String = "") -> AudioStreamPlayer:
-	var player = prepare(resource, override_bus)
+	var player := prepare(resource, override_bus)
 	player.call_deferred("play")
 	return player
 
diff --git a/addons/sound_manager/sound_manager.gd b/addons/sound_manager/sound_manager.gd
index ebfc992..73d1ce8 100644
--- a/addons/sound_manager/sound_manager.gd
+++ b/addons/sound_manager/sound_manager.gd
@@ -68,7 +68,7 @@ func play_sound(resource: AudioStream, override_bus: String = "") -> AudioStream
 
 
 func play_sound_with_pitch(resource: AudioStream, pitch: float = 1.0, override_bus: String = "") -> AudioStreamPlayer:
-	var player = sound_effects.play(resource, override_bus)
+	var player := sound_effects.play(resource, override_bus)
 	player.pitch_scale = pitch
 	return player
 
@@ -100,7 +100,7 @@ func play_ui_sound(resource: AudioStream, override_bus: String = "") -> AudioStr
 
 
 func play_ui_sound_with_pitch(resource: AudioStream, pitch: float = 1.0, override_bus: String = "") -> AudioStreamPlayer:
-	var player = ui_sound_effects.play(resource, override_bus)
+	var player := ui_sound_effects.play(resource, override_bus)
 	player.pitch_scale = pitch
 	return player