Fix compiling issues

source/funkin/backend/chart/Chart.hx

@@ -56,6 +56,7 @@ class Chart {
 		data.setFieldDefault("name", songName);
 		data.setFieldDefault("beatsPerMeasure", 4);
 		data.setFieldDefault("stepsPerBeat", 4);
+		data.setFieldDefault("needsVoices", true);
 		data.setFieldDefault("icon", "face");
 		data.setFieldDefault("difficulties", []);
 		data.setFieldDefault("coopAllowed", false);

source/funkin/backend/chart/ChartData.hx

@@ -26,6 +26,7 @@ typedef ChartMetaData = {
 	public var ?coopAllowed:Bool;
 	public var ?opponentModeAllowed:Bool;
 	public var ?customValues:Dynamic;
+	public var ?needsVoices:Bool;
 
 	// NOT TO BE EXPORTED
 	public var ?parsedColor:FlxColor;

source/funkin/backend/chart/FNFLegacyParser.hx

@@ -41,6 +41,7 @@ class FNFLegacyParser {
 		}
 
 		result.meta.bpm = data.bpm;
+		result.meta.needsVoices = data.needsVoices.getDefault(true);
 
 		var camFocusedBF:Bool = false;
 		var altAnims:Bool = false;

source/funkin/editors/charter/Charter.hx

@@ -526,7 +526,7 @@ class Charter extends UIState {
 		noteTypes = PlayState.SONG.noteTypes;
 
 		FlxG.sound.setMusic(FlxG.sound.load(Paths.inst(__song, __diff)));
-		if (Assets.exists(Paths.voices(__song, __diff))) // null or true
+		if (PlayState.SONG.meta.needsVoices != false && Assets.exists(Paths.voices(__song, __diff))) // null or true
 			vocals = FlxG.sound.load(Paths.voices(__song, __diff));
 		else
 			vocals = new FlxSound();

source/funkin/game/PlayState.hx

@@ -1000,7 +1000,7 @@ class PlayState extends MusicBeatState
 		curSong = songData.meta.name.toLowerCase();
 
 		inst = FlxG.sound.load(Paths.inst(SONG.meta.name, difficulty));
-		if (Assets.exists(Paths.voices(SONG.meta.name, difficulty))) // null or true
+		if (SONG.meta.needsVoices != false && Assets.exists(Paths.voices(SONG.meta.name, difficulty))) // null or true
 			vocals = FlxG.sound.load(Paths.voices(SONG.meta.name, difficulty));
 		else
 			vocals = new FlxSound();