Gurray Miles' "Breaking Into Japanese Literature" offers a whole bunch of free MP3 audio files on their site. The material is a set of classic stories, in the original language, without translation, but with progression from easy to advanced material. Unlike the Pimsleur Method, this is one-time-through material. Fortunately each segment is short enough (ten minutes?) that you can repeat, and repeat, and gradually soak it in.
The book really helps here. It contains the Japanese text, an English translation, and extensive vocabulary list, all on the same set of two facing pages. You can download these audio files for free, but you'll get a better return on your time if you compensate the author by buying the book, too.