bbunnys: All you have to do to get to US play store and buy music etc, is change your credit card info to a US address.
I use the address of my NZ Post yourshop account. I can log onto my PC, tablet, phone etc and it always defults to the US store and I can buy songs etc. No VPN etc required.
But just to to watch that anything I buy ends up costing more due to it being in US $.
I tried this but it didn't work for me.