Add audio spectrum listener.

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

LLSIG/src/main/java/LLSIG/LLSIG.java

@@ -118,6 +118,7 @@ public class LLSIG implements KeyListener{
 			LoadSongData(song,lanes);
 		}
 		Canvas canvas = new Canvas(f.getSize());
+		musicPlayer.setAudioSpectrumListener(canvas);
 		window.add(canvas);
 		window.setVisible(true);
 		window.addKeyListener(this);

LLSIG/src/main/java/LLSIG/Player.java

@@ -1,4 +1,5 @@
 package main.java.LLSIG;
+import javafx.scene.media.AudioSpectrumListener;
 import javafx.scene.media.Media;
 import javafx.scene.media.MediaPlayer;
 import javafx.scene.media.MediaPlayer.Status;
@@ -46,4 +47,7 @@ public class Player {
 	public void seek(long frame) {
 		jlpp.seek(new Duration(frame));
 	}
+	public void setAudioSpectrumListener(AudioSpectrumListener listener) {
+		jlpp.setAudioSpectrumListener(listener);
+	}
 }