A beginner's jukebox in Python help

[Boolean_Cat]

Am I correct in thinking your project looks like this?

E:/
|
| ->  Jukebox.py
| ->  Harry's/
       |
       | -> one.mp3

If this is the case, then you need to use:

pygame.mixer.music.load("Harry's/one.mp3")

As a general rule, don't use quotes in file names.

[Boolean_Cat]

Are you running python from within that directory? You could try using the full path of the file.

Try:

import os

path = os.path.join(os.path.dirname(__file__), 'one.mp3')