Download PS3 games demo to pc?

Hi everybody and congrats for the great job with the emu so far! I would like to test some ps3 games demo, I registered on sony store and tried to download a demo, but it doesn't allow me to do so without a ps3... Unfortunately I don't own a ps3, so do you know if there is a way to download the demos directly on my pc? Just talking about demos, no piracy