If you live in the US you go to the iTunes Store. In Europe and elsewhere it's The Guardian that has the new song Radio Nowhere as a free download for a week.
A third download site is radionowheredownload
You have to sign up with name/e-mail, but get a better sounding file than The Guardian one. 192 kbps instead of 128.
A short rocker with the E-Street Band and lyrics that can be seen as a critique of the bland music mix on commercial radio these days. Springsteen fans will like it, casual fans might say it sounds like Bruce but...
Go listen and see what you think!
The full album titled Magic will be out October 1.