Also the quality of the sound will be pretty poor so I wouldn't say it's worth the effort.
'Videodownloader' is the name of an extension for Mozilla Forefox which allows you to download Youtube videos as .flv files. Obviously since Youtube only allows non-copyrighted material on it there should be no problem in you downloading same.
I think it is an idea to download the flv file and then use an audio stripper to rip the music from it....as said before the quality would be a little bit less....
yes there is a very simple way
Down load softwere called youtube downloader its free and so easy to use.
Just copy and paste the address of the video its the best to use