An Introduction to youtube to mp3 converter
https://post-wiki.win/index.php?title=The_Most_Hilarious_Complaints_We've_Heard_About_online_youtube_mp3_converter
Of these websites YouTube being the greatest provider of FLV files on the web. You can set the output folder at Advanced-> Choices prior to moving. All you need to do is set up the program and then insert the link.