rename class

src/backend/Board.java

@@ -570,7 +570,7 @@ public class Board {
 	public boolean isKingInCheck(boolean isWhite) {
 	    // First, find the king's position
 	    Piece king = findKing(isWhite);
-	    SoundPlayer soundPlayer = new SoundPlayer();
+	    soudEffect soundPlayer = new soudEffect();
 	    
 	    if (king == null) {
 	        // If king not found (shouldn't happen in a valid chess game)

src/backend/soudEffect.java

@@ -4,7 +4,7 @@ import javax.sound.sampled.*;
 import java.io.File;
 import java.io.IOException;
 
-public class SoundPlayer {
+public class soudEffect {
     public void playCheckSound() {
         try {
             // Replace "check.wav" with the path to your check sound file