Pyinstaller : Cannot include .mp3 files

Question

I'm trying to create a stand-alone python application (Tic-Tac-Toe) using pyinstaller . I wrote the following commands in the command prompt:

pyinstaller -w --onedir x_and_o.py

pyinstaller --add-data "Sound;snds" x_and_o.py

The.mp3 files are saved in the folder "Sound". Everything was executed 'Successfully' but I'm still getting the following error:

pygame 1.9.6
Hello from the pygame community. 
https://www.pygame.org/contribute.html
Exception in Tkinter callback
Traceback (most recent call last):
   File "tkinter\__init__.py", line 1883, in __call__
   File "x_and_o.py", line 216, in <lambda>
   File "x_and_o.py", line 30, in changeText
   File "x_and_o.py", line 182, in pop
 pygame.error: Failed loading libmpg123.dll: The specified 
 module could not be found.

Here's a snippet from my code:

pygame.mixer.init()

def pop_sound():
pygame.mixer.music.load(r"C:\Users\Dipesh\OneDrive\Desktop\Visual Studio Code\Tic-Tac-Toe Project\Sound\pop.mp3") # r means 'raw string'
pygame.mixer.music.play()

def Air_horn():
pygame.mixer.music.load(r"C:\Users\Dipesh\OneDrive\Desktop\Visual Studio Code\Tic-Tac-Toe Project\Sound\Air horn.mp3") # r means 'raw string'
pygame.mixer.music.play()

def game_over_sound():
pygame.mixer.music.load(r"C:\Users\Dipesh\OneDrive\Desktop\Visual Studio Code\Tic-Tac-Toe 
Project\Sound\gameOver.mp3")
pygame.mixer.music.play()

I've tried looking up for solutions online but couldn't find any solution to my problem.

I'm using Windows 10 and coding in VS code.

Answer 1

To solve the following error:

pygame.error: Failed loading libmpg123.dll: The specified 
module could not be found.

I simply needed to download this file and move it to my application folder. You can read about libmpg123 here

Answer 2

I solved this by editing init_library in the library file mpg123.py. By hardwriting the location of the.dll into this method (if you need the dll you can acquire a compiled binary from the mpg123 site), and then using the pyinstaller flag to include the.dll, it will be correctly packaged into the exe.