Download audio from YouTube video, convert it to mp3 and speed it up

Assuming your on Windows.

Donwload Youtube-dl.exe from:
https://rg3.github.io/youtube-dl/download.html

Download ffmpeg and unpack to c:\ffmpeg:
https://ffmpeg.org/download.html

Prepare video link, download in mp3 format.

> youtube-dl.exe -x --audio-format mp3 --ffmpeg-location c:\ffmpeg\bin\ffmpeg.exe https://www.youtube.com/watch?v=ss2STiSP0uo 

Assuming I want to speed up 1.5 times, execute this command:

> c:\ffmpeg\bin\ffmpeg.exe -i JustDownloadedAudio.mp3 -filter: "atempo=1.5" -vn MySpeedUpAudio.mp3