What ways do you know to increase the cost per thousand impressions on YouTube?

I just recently discovered YouTube. I know, I know, I'm a caveman. But as it happens, I just didn't use YouTube before. But now I use it all the time, mostly to listen to music. Does anyone know if YouTube has a video download function?

YouTube was very good until they started using new rules and also a bunch of ads. Now I often can't listen to good music without a hellish commercial in the middle of a clip or track. This is unacceptable to me. I started using a service like youtube video downloader. I'm sure a lot of people are doing it now. So I get what I want and I don't have to use the internet to re-listen.