I am limited to what I can multitask with. I listen to audiobooks on my commute, but I can't listen to them at home. If I'm doing something like folding laundry or washing dishes -- which do not require much brain power to do and are ideal for book listening -- when I move on to the next task, I will forget to stop the audiobook. Eventually, I will start to "hear" it again, but if I'm concentrating on anything else, I just don't notice it.
I can't listen to audiobooks when I'm knitting, either. There is just enough technique *stuff* that I have to think about while knitting that I constantly lose track of the book. TV is different, since I can get visual clues to reorient myself when my attention wanders from the screen but it's often harder to get caught up when my mind has shut out the book for a few minutes.
I pretty much listen only when I'm driving. I can't even imagine finishing a book in seven days; my commute isn't long enough.