FIX: Empty List to ensure none of the previous elements are in the list

src/main/java/de/hdm_stuttgart/battlearena/Model/Sound/MusicPlayer.java

@@ -73,6 +73,7 @@ public class MusicPlayer{
 
                 String randomPath = fileManager.getRandomFilePath(musicPaths);
                 String resource = fileManager.convertPathToResourcePath(randomPath);
+                musicPaths.clear();
 
                 Thread thread = new Thread(() -> {
                     Media media = new Media(getClass().getResource(resource).toExternalForm());