Once a day?? Heck, you can listen to three a day or more (assuming that they're toward a common goal). Once a day is just fine; there's no reason to listen to any less. However, it's usually good to have something of a goal in mind when listening to the tape, or at least a REASON to do so. Just call up Dana and he'll lead you through the torturous "so you can do what??" routine, but that's another story.
