I have my music from CD in both MP3 and FLAC format. Unfortunately, the Google Music uploader insists on uploading both formats, and so I have duplicate tracks. Is there an app/tool/method to find and remove these duplicate tracks from the cloud?

  • What if you deleted both, and then re-upload the one you want. Have you tried that?
    – pqsk
    Jun 19, 2014 at 18:39
  • 1
    @pqsk There are several thousand files; simply finding the duplicates is non-trivial.
    – Eric Brown
    Jun 19, 2014 at 21:16
  • gotcha. Thought it was just a few. What if you were to just delete your collection, and then on your workstation, remove those files and then reupload. Not sure if this is a good suggestion, since I have no idea how big your library is, and/or how fast your internet connection speed is. The music api is non-documented if I remember correctly btw.
    – pqsk
    Jun 20, 2014 at 3:45
  • @pqsk there is that: github.com/simon-weber/Unofficial-Google-Music-API not sure how good it is though. Jan 20, 2015 at 23:07

3 Answers 3


From a PC running Windows 10 x64 (64-bit):

  1. Install the latest Python 2.7.x version. (I used Python 2.7.10; Do not use any Python 3.x.y version -- I couldn't get it to work with this script.)
  2. If using Windows, install the Microsoft Visual C++ Compiler for Python 2.7. One of the dependencies of gmusicapi requires it.
  3. Install the Google Music API for Python. You should use "pip" (Python's built-in installer script) to install it. On Windows, pip is not added to the PATH environment variable. The quick, lazy workaround is to invoke it specifically:

    C:\Python27\Scripts\pip.exe install gmusicapi
  4. See footnote if you're having issues. LibAV or ffmpeg are probably not required for our purposes.

  5. On the right side of the Google Music Dupe Killer page:

    • Click "download ZIP" → Extract the ZIP → Rename kill-dupes to kill-dupes.py → Right click → edit with Notepad (or Notepad++, or anything similar) → Ctrl-F ("find") for "username".
    • On line #89, you'll see this (line numbers added for ease of reading):

      88. api = Mobileclient()  
      89. logged_in = api.login('username', 'password') 
      91. if logged_in:
  6. Replace the word username with your Google username, and the word password with your Google password. Leave the single-quotes ' as-is. Save the file with the edits you made.

  7. Allow less secure apps to access your account via Google. If you don't do this, Google will email you telling that they blocked someone accessing your account the first time you run the script. In that email, there is a link to change the setting.

    (Note: you may wish to change it back after you are done with this script.)

  8. Put the modified kill_dupes.py script somewhere you can find it. I put it in C:\Python27\.

  9. Open the Windows command prompt. (Win+R opens the Run dialog, cmd is the command prompt. Press Enter.)

    • You'll see a Window with this written:

    • Run Python with the script you made:

      C:\Users\YourWindowsUsername>c:\Python27\python.exe c:\Python27\kill_dupes.py
    • Press Enter to run the script:

      Successfully logged in. Beginning duplicate detection process.
    • The program prints a list of the duplicate tracks it found. Type y and press Enter to remove them, or n to not remove them.

    • kill_dupes.py and maybe its parent program gmusicapi crash on Unicode characters like つんく♂. Here is the bug report. Oddly enough, by running the script from IDLE, it worked fine. IDLE should be included with all Python installs.

    • IDLE (Python GUI)fileopenkill_dupes.py

    • IDLE (Python GUI)runrun module

    • If you just see a blank window, you probably forgot to allow less secure apps to access your account. See step 7.

  10. (Optional) Forbid less secure apps from accessing your Google account.

I used the answer by neves to develop this answer.

Footnote: Installing LibAV

  • This probably isn't required, but it's what I did the first time I did this. I have since successfully removed duplicates without LibAV, but I did have ffmpeg in my PATH already. The reason I say this step isn't required is because the Google Music API website says:

    If you’re going to be uploading music, you’ll likely want Libav’s avconv installed and in your system path, along with at least libmp3lame.

Update 2016-01-09: The site now says:

The only time avconv or ffmpeg is not required is when uploading mp3s without scan-and-match enabled.

Use your judgment as to whether or not installing LibAV is needed.

  • Download the newest (sort by date modified) "nightly-lgpl" x86_64 variant of LibAV. It's linked from the site given in step 2.
  • I downloaded libav-x86_64-w64-mingw32-20150524.7z → extracted the .7z file → added the /usr/bin folder within the extracted libav folder to the PATH. (The steps are explained in the link in step 2. lat ays to add (Python's built-in installer script) avconv.exe to the PATH. So my computer now has D:\Downloads\libav-x86_64-w64-mingw32-20150524\usr\bin added to its PATH.

In a desktop computer,you can run Google Music Dupe Killer script. If you are not used to computers, it is not trivial, but doable. You have to install the Python language, and follow the instructions in the script site.


Other than storing them in seperate locations and specifying where the files you want are or manually going into google music on your pc or phone and deleting them, no. But even if you delete them once the music manager catchs them missing and you havnt changed the folder it will reupload them at least it used to.

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