You don't use auth and capture -- you create a customer (with the card/token) in stripe and then create a charge against the customer.

Having a customer allows you to charge the user without entering in their info each time.

EDIT: I built beaconreader.com which is a crowdfunding site and we use stripe. One thing to note about creating customers is that on the backend Stripe (and other payment providers) tells the banks that it's a recurring charge, even if only charged once, which I believe allows them not to deal with the auth and capture step. I could be wrong, but there's something like that lets processors get away with it.