from pydub import AudioSegment
mp3_audio = AudioSegment.from_mp3("test2.mp3")

 \Users\User\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pydub\utils.py:165: RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work
  warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
Traceback (most recent call last):
  File "C:/Users/User/Desktop/musicplayer/main.py", line 4, in <module>
    mp3_audio = AudioSegment.from_mp3("test2.mp3")
  File "C:\Users\User\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pydub\audio_segment.py", line 460, in from_mp3
    return cls.from_file(file, 'mp3')
  File "C:\Users\User\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pydub\audio_segment.py", line 443, in from_file
    p = subprocess.Popen(conversion_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  File "C:\Users\User\AppData\Local\Programs\Python\Python35-32\lib\subprocess.py", line 947, in __init__
    restore_signals, start_new_session)
  File "C:\Users\User\AppData\Local\Programs\Python\Python35-32\lib\subprocess.py", line 1224, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] Не удается найти указанный файл