Bobocop said:

So... I finally finished downloading this today, and Jdownloader was kind enough to extract it for me. Then I deleted the original archive files. Then I thought to myself "I don't need the AUDIO_TS folder, I'll delete that too."

So I deleted the VIDEO_TS folder by mistake. Now I need to redownload the whole thing.

I have failed you for the last time.

Assuming your harddrive isn't filled to the brim, did you try recuva before re-downloading the whole thing? Could save you quite a bit of time and effort...