Yes. Absolutely. Blurb takes this very seriously and we really respect your content rights. (And by content we mean the original text, files, images, photos, video, sounds, works of authorship, and other material that you include in your books. That’s right: Sounds. We have to cover everything.) For the full legalese, please refer to Section 8 of our Terms and Conditions.
All the original material you put in your Blurb book still belongs to you once it’s printed, as explained in Blurb’s Terms and Conditions. You can do whatever you want with all your own original material in your book.