QtMediaPlayerFAIL.py

import sys
from PyQt5 import QtWidgets
from PyQt5.QtMultimedia import QMediaPlayer, QMediaContent
from PyQt5 import QtCore


class Window(QtWidgets.QMainWindow):

    def __init__(self):
        super().__init__()
        self.setGeometry(50, 50, 500, 500)
        self.setWindowTitle("RolevPlayer")
        self.player = QMediaPlayer()
        self.player.setMedia(QMediaContent(QtCore.QUrl.fromLocalFile("So Far Away.mp3")))
        self.player.setVolume(50)
        self.player.play()
        self.show()

app = QtWidgets.QApplication(sys.argv)
GUI = Window()
sys.exit(app.exec_())