Does anyone know if the PB is available on CD? I've been Primal for a couple of years. My husband has done his own thing (eats whatever he comes in contact with and drinks beer ). He's been weaning himself off of the beer and seems to be showing some interest in PB. He's not much of a reader (learning disorders), so the odds of him reading the book are low. He is in a car driving about four hours each day. If I can find an audio version, I think he'd listen to it while he's driving during the day. I checked Amazon, but didn't find it there.