Downloading purchased audiobooks on my new computer!

Recently I had to unexpectedly replace my computer just days after purchasing and downloading an audiobook from iTunes. I've been in the process of setting up my new PC today. I was able to recover my purchased iTunes files by authorizing my computer with my Apple Id and clicking purchases in the bottom menu. However, my audiobook was not amongst the purchased files I could download, even when a CD I purchased in the same transaction was! Is there a way I can recover it without having to pay for it again?