I've had a number of emails like this over the last 18 months and while a couple of them might be warez requests the majority seem to be someone who's downloaded a freebie from somewhere without understanding what they're downloading or the requirements for it to work. The selection of recipient for the email isn't always deliberate, it depends on a number of factors. You've told them where they can get the file from, that's all that really matters. If they're after warez then they'll get what they want eventualy anyway. Pointing them in the right direction may have a beneficial effect.