is there any way to get music from youtube to itunes for free without downloading anything?

110100101108 years ago
you have to download atleast the music itself ;)

you can use keepvid to download mp4 files

to convert them to mp3 should not be an issue

and i guess itunes can open mp3
All steps can be reduced to one step:

copy music from youtube to mp3 is the direct way out. Before recording youtube videos, you can save them as mp3 format, no need for conversion again.
dang i wanted to say the first thing
It's called Limewire and it's illegal. : )