Как написать воспроизведение звука? [PySide2]

import sys
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt, QRunnable, QThreadPool, QObject, pyqtSignal
 
MAX_ITER = 1000000
 
 
class ProcessorWorker(QObject):
   iteration_passed = pyqtSignal(int)
   status_changed = pyqtSignal(bool)
   finished = pyqtSignal()
 
 
class Processor(QRunnable):
   def __init__(self, parent):
      super().__init__()
      # we need parent to protect worker
      # from being deleted before Processor
      self.signals = ProcessorWorker(parent)
 
   def run(self):
      self.signals.status_changed.emit(True)
      with open("out.txt", "w") as f:
            i = 0
            while i < MAX_ITER:
               f.write("{}\n".format(i))
               i += 1
               self.signals.iteration_passed.emit(i + 1)
      self.signals.status_changed.emit(False)
      self.signals.finished.emit()
      # now we ask application do delete worker
      # since we don't need it anymore
      self.signals.deleteLater()
 
 
class MainWindow(QtWidgets.QMainWindow):
   def __init__(self):
      super().__init__(flags=Qt.CustomizeWindowHint | Qt.WindowMinimizeButtonHint | Qt.WindowCloseButtonHint)
      vlayout = QtWidgets.QVBoxLayout()
      widget = QtWidgets.QWidget()
      widget.setLayout(vlayout)
      self.setCentralWidget(widget)
      self.bar = QtWidgets.QProgressBar()
      self.bar.setMinimum(0)
      self.bar.setMaximum(MAX_ITER)
      self.bar.setValue(0)
      vlayout.addWidget(self.bar)
      self.button = QtWidgets.QPushButton("Start")
      self.button.pressed.connect(self.process)
      vlayout.addWidget(self.button)
      button = QtWidgets.QPushButton("About")
      button.pressed.connect(app.aboutQt)
      vlayout.addWidget(button)
      self.thread_pool = QThreadPool(self)
      self.destroyed.connect(lambda: self.cleanup())
 
   def process(self):
      processor = Processor(self)
      processor.signals.iteration_passed.connect(self.bar.setValue, Qt.DirectConnection)
      processor.signals.status_changed.connect(self.button.setDisabled)
      processor.signals.finished.connect(lambda: self.bar.setValue(0))
      self.thread_pool.start(processor)
 
   def cleanup(self):
      self.thread_pool.waitForDone()
 
 
if __name__ == "__main__":
   app = QtWidgets.QApplication(sys.argv)
 
   w = MainWindow()
   w.setFixedSize(300, 150)
   w.show()
 
   sys.exit(app.exec_())

import os
import  pygame
fext = 'mp3'
for i in os.listdir(os.getcwd()):
    if i.endswith(fext):
        playlist.append(i)
        print('список песен равен')
        print(playlist)
        for i in range(len(playlist)):
            pygame.init()
            wnd = pygame.display.set_mode((640, 640))
            pygame.mixer.music.load(playlist[i])
            pygame.mixer.music.play(-1, 0.0)
            circule = pygame.draw.circle(wnd, (50, 30, 90), (90, 30), 16, 5)
            wnd.blit(wnd, circule)
            while True:
                for event in pygame.event.get():
                    if event.type == pygame.QUIT:
                        pygame.quit()
                        sys.exit()
                pygame.display.update()