YouTube as iTunes

Ever dug into iTunes with a tune in your head, only to find you can't buy it on iTunes?

Ever used iTunes like an LP player ... one song at a time?

YouTube is basically a P2P music service, with every song I've ever wanted to hear in video format. Content owners likely allow YouTube to host music videos for the same reason they let radio play songs. But if they knew I used YouTube like a kind of infinite LP player, maybe they wouldn't.