I'd just like to point out that the reason this isn't a standard feature is to prevent people from spreading copyrighted music illegally, despite there being ways around it. I'm an advocate of paying for your music, as we should be protecting the industry we all love. Contrary to popular opinion, recording artists struggle to make a living in this industry barring exceptional circumstances. Illegal downloading is forcing record companies to minimise risk with the artists they invest in, which is why the charts are filled with uninspiring music. Cheers.