GitHub - appelblim/Flv2Mp3: A frontend for ffmpeg written in GTK+-3.0 / C capable of transcribing video files into mp3's of variable quality and setting metadata - this is very basic, it leaks
flv2mp3.org is now known as flv2mp3.by and it's back to mp3 conversions
FLV2MP3 og 10 beste alternative nettsteder for å konvertere YouTube til MP3 [gratis]