This is a state-of-the-art language learning course for spoken Spanish. The popular Pimsleur course does not use a book but uses a completely aural approach to language learning, perfect for learning "on-the-go". Features a proficiency-based system that helps the student learn through listening and speaking practice.
Here you can find the 3 Pimsleur Spanish levels
Pimsleur Spanish I
http://e45.org/1627
Pimsleur Spanish II
http://e45.org/1628
Pimsleur Spanish III
http://e45.org/1629