pip install python-vlc
Queue.get(block=True, timeout=None)
Remove and return an item from the queue. If optional args block is true and timeout is None (the default), block if necessary until an item is available.
def on_update(event, q=None, pb=None):
while not q.empty():
pb['value'] = q.get()
'c:/bit.mp3'
Еще нужно дождаться конца проигрывания: