Piracy

I want to give something back to the community and I was wondering if there was any way to share a file (to pirates) so that it won't be traced back to me? What precautions should I take? Is there metadata attached to the file? How does your computer remember a modification date and date create, is it embedded into it?

I am talking about audiobooks btw, I have downloaded a ton of audiobooks and I want to send it somewhere where others can download it for free after an internet search. So yeah, I do want to make it untraceable. But for this scenario, you are free to assume that I have the nuclear codes or a new virus genome (I wonder which one is deadlier)