How do I convert a Youtube video into Audio and burn it onto a CD?

At first you should download youtube videos to your computer harddrive, more websites can download youtube videos, like keepvid.com, etc. then you can try RZ Audio Converter, it can convert and burn any videos or musics to Audio CD or MP3 CD, such as convert/burn flv/mp4, etc to Audio/MP3 CD. you can yahoo or google search and download rz audio converter, easy to use, hope it can help you!