It doesn't matter if it's a CD, a Film, or manual with the instructions to build a spaceship. If you copy it, the original owner doesn't lose anything. If you don't copy it, the only one missing something (the experience) is YOU.
Enjoy!
Of course, if you happen to have some extra money for donations to creators, please do so. If you don't have that, try contributing with a review somewhere or recommending the content, spread the word. Piracy was shown to drive businesses in several occasions by independent and biased corps (trying to show the opposite).
The world doesn't (need to) run on giving only what you owe. People donate to creators not through moral obligation, but because they like what the creator has made and they want to reward them for it and/or enable them to make more of it.
Why do you think Patreon (and others) is so popular? Any cynic would surely point out that from a purely transactional outlook, the donors are getting a bad deal. And yet.