What are you talking about ? Cracking the DRM would be preferred but if you think about it, screen capturing and OCR-ing is even faster than scanning a paperback book (and that's not hard at all).
Even if the book has video embedded it can be screen captured with various software. Then converted. Then embedded in the new file.
Audio embedded ? There's computer software that can record
everything that makes a sound in your device. You basically plug in the 3.5 mm jack from your headphones into the PC Mic slot and push play on your device. Easy. Kinda like VHS tapes can be captured with a tv tunner. You hit play and the output is recorded on your PC.
So yeah. There are ways around DRM, for just about any type of content. It would take time and effort, of course, but it can be done. And hey, all it takes is ONE committed person to do it and post it online on a public tracker. Your client (and everyone who works in the entertainment business) should know and understand that if someone wants to pirate it, they will.
PS: I think the printing restriction was implemented because of software that can print straight to PDF.
Not because someone could actually print it on paper and sell it. Haha. That was pretty dumb of me. Sorry about that.