I belong to Audible and have for years. Originally audio books were my way of coping with housework, then they helped make my commute bearable. These days most of my knitting is done on the bus or in waiting rooms, and I can't mix in an audiobook as well. When I get the chance to knit and listen at home, though, I enjoy it.
If you're enjoying Jane Austin, might I suggest you add Dickens to your listening list? A fantastic one to start with is Great Expectations -- unabridged of course!
If you're an English lit buff and haven't read the Thursday Next Novels (starting with the Eyre Affair), you don't know what you're missing.
P.G. Wodehouse is a scream. I especially like the ones set at Blandings Castle.
A sweet listen is All Creatures Great and Small plus the sequels.
For non-fiction, A Short History of Nearly Everything is entertainingly written. And "Getting Things Done" is the only time management book that ever worked in real life for me.