I hope this clears things up for you:
How to determine if you have stolen something.
1) Do you now have something that you didn't have a minute ago?
Examples might include cars, sneakers, or perhaps an MP3 audio file of a song and the enjoyment that you experience when you listen to that song.
2) Is this thing the product of someone else's hard work and financial investment?
Examples might include the years of heart ache and hard work that a songwriter puts into his craft in order to create something that enriches other people's lives. It might also include the years of rejection sweat and tears that go into a performer's craft.
3) Does the creator make, or hope to make their living by selling this thing? If so, did you take it without paying?
Examples might include a farmer who expects to be paid for the corn he grows, but you went out in the field and cut some yourself. Or a songwriter who only makes 4 cents off each sale of his song, but you downloaded it from Limewire instead of paying 99 cents on iTunes before driving down to Starbucks where you paid $4 for a cup of coffee.
If you answered "yes" to all three questions then you have stolen something that you were not permitted to take.