Allow more fine controls for main sound track

assets.py

@@ -67,6 +67,9 @@ def init_sounds():
     music_files = ["main.wav", "OP.wav", "shot.wav"]
     for file in music_files:
         path = os.path.dirname(os.path.realpath(__file__)) + "\\resources\\sounds\\" + file
-        mixer = pygame.mixer.Sound(path)
+        if file == "main.wav":
+            mixer = pygame.mixer.music
+            mixer.load(path)
+        else: mixer = pygame.mixer.Sound(path)
         mixer.set_volume(1.0)
         Sounds[file.replace(".wav", "")] = mixer

game.py

@@ -154,11 +154,13 @@ def play(window, options):
 
         if len(target_group) == 0: #If all current players are gone.
             player.level += 1
+            Sounds["main"].set_volume(0.5)
             target_group = generate_targets(player, WINDOW_SIZE, Levels)
             target_group.draw(window)
             bullet_group.empty()
             pygame.display.update()
-            sleep(1.5)
+            sleep(0.75)
+            Sounds["main"].set_volume(1.0)
 
         if player.OP:
             player.change_colour((255,96,0)) #override colour change if changed before