added second button and logic to stop events as a test

main.py

+import sys
 import os
 from os.path import isfile, join
 import pygame
@@ -56,17 +57,18 @@ def play_sound(index):
     global sound_array
     global btn_array
     
-    sound_playing = True
-    
     print('play func called')
+    sound_playing = True
 
     if not cut_current_sound:
         current_sound_index = index
         channel = sound_array[current_sound_index].play()
+        
         while channel.get_busy():
             pygame.time.wait(100)  # ms
             print("Playing...")
             pygame.event.clear()
+            
         sound_playing = False
         #btn_array[current_sound_index].when_pressed = lambda: btn_pressed(index)
         print("Finished. ")
@@ -125,31 +127,31 @@ setup_paths(False)
 def btn_pressed(index):
     global btn_array
     global sound_playing
-    btn_array[index].when_pressed = None
-    btn_array[index].when_released = lambda: resetBtn(index)
+    #btn_array[index].when_pressed = None
+    #btn_array[index].when_released = lambda: resetBtn(index)
     print('keeps pressing')
     if(not sound_playing):
         print('btn pressed')
         play_sound(index)
     
-def resetBtn(index):
+    """
+    def resetBtn(index):
     global btn_array
     
     #if(sound_playing):
     print('btn released')
     btn_array[index].when_released = None
-    pygame.time.wait(100)
-    btn_array[index].when_pressed = lambda: btn_pressed(index)
+    btn_array[index].when_pressed = lambda: btn_pressed(index) """
 
 btn1 = Button(21)
 btn1.when_pressed = lambda: btn_pressed(0)
-btn1.when_held = None
-btn1.when_released = lambda: resetBtn(0)
+#btn1.when_held = None
+#btn1.when_released = lambda: resetBtn(0)
 
 btn2 = Button(13)
 btn2.when_pressed = lambda: btn_pressed(1)
-btn2.when_held = None
-btn2.when_released = lambda: resetBtn(1)
+#btn2.when_held = None
+#btn2.when_released = lambda: resetBtn(1)
 
 btn_array = [btn1, btn2]
 
@@ -201,6 +203,7 @@ while run:
 
 
 pygame.quit()
+sys.exit()
 exit()
 # time.sleep(5.5)
 # signal.pause()