Almost all of my music is samples, other songs and other people's music, sample packs, stems and Idea's. I think my movie idea's are mashups of a 10000 movies, comic's and other media.
I think Nate north makes a valid point, you don't steal from people that have less then you.
I used to use a lot of stolen samples when I was younger, and I'm still into what's called mashups, I was doing it with an mpc 2000 before they even had a name for it.
These days I don't use any stolen samples, It's not any kind of philosophy or moral high ground, it's just that back in the day, we had nothing to work with. We HAD to use borrowed loops because only a person with a 2 million dollar studio could record a drum track properly.
Now, music has become fully democratized, with all the advantages and disadvantages that comes with. I've got unlimited legal samples, and more instruments than any human could ever play. At this point the only bottleneck is time, skill, and creativity. It's nice. It's what I always wanted. I just wish I had more time, skill, and creativity, lol.
As far as movies, I kind of see them like bricks in a pyramid. The brick halfway up the side is it's own unique object, but it wouldn't be there if it weren't for all the bricks under it. It's not stealing from them, it's supported by them. This was the whole idea of the pyramid, that with every achievement we could build higher and higher as a collective, hopefully improving the height each individual could hope to aspire to.
For those unfamilliar, this is a mashup, it's stolen samples only, and it's good art, though you can't sell it. I can appreciate the sheer lunacy of combining AC/DC with Crowded House.