When you see a video in Youtube, press F7 to download the song and add the song to your iTunes music. You need autoit, one environment variable set and add the cmd and py script in your path.
You have to download FFMpeg and add the bin folder into your PATH. For Python, use Python 3 of course and this if the dependency :
- youtube-dl
- mutagen
Clone the project into a directory and add the src folder to your path.