Thanks. The One I have is simple. It usually works for MOST but not all video's. I have a program that's already on my desktop.
About these 2, I don't know how to use them. What do you do? Where you put the link? Are you sure their is no virus and such issues?
youtube-dl just takes the URL of the video and will create a file in the current directory. For the version of Linux I run the youtube-dl program is available in the 'software center' (a repository of easily downloaded and installed apps). I have not used it on Windows (but the website indicates that it should world with the included python interpreter).
For instance
youtube-dl -t https://www.youtube.com/watch?v=lIJr8d05G18
This will download a file יניב בן משיח - רקדו לכבוד בורא עולם _ yaniv ben mashiach-lIJr8d05G18.mp4
ffmpeg -i "יניב בן משיח - רקדו לכבוד בורא עולם _ yaniv ben mashiach-lIJr8d05G18.mp4" -acodec copy audio.mp3
Will extract the audio to the file audio.mp3....