So if someone makes a copy of a car, and gives it to you, it's not fine?

That wasn't my point. My point was, that if someone commits a crime, and then "gives" you the product of that crime, it doesn't mean you're innocent if you knew a crime was committed.

If someone breaks in to Google and steals some trade secrets, copies them to a memory-stick, and gives them to you, etc

I should have known better to compare stealing music to stealing cars ;)