Once you flag a Google account on your Android gadget as American (using Tor network), all the features are available.
You don't actually have to do anything if you have already set up Google Music this way.
Just find and install the APK (isn't available from Google Market to Canadians).
Installed it. It really is a copycat of Flipboard, but does not provide Facebook or Twitter access. Its not as slick as Flipboard, but its not a bad RSS reader (and you can bring in google reader feeds). I can see it having some value, although I don't know how much I will use it.