Google Play Music Desktop Player

Get latest from here.

Good post at this link listing all builds.

Example MacOS

mv "/Applications/Google Play Music Desktop Player.app/Contents/Resources/app.asar" "/Applications/Google Play Music Desktop Player.app/Contents/Resources/app.asar.$(date '+%Y-%m-%d')"

Now extract the downloaded zip.

Then copy in new app.asar.

If that doesn't work, try installing again from the zip you downloaded.

https://github.com/MarshallOfSound/Google-Play-Music-Desktop-Player-UNOFFICIAL-/issues/3545

[Edit]