These two 60-minute CDs, recorded by native speakers of Czech, are an invaluable component of the Colloquial Czech course. While reinforcing material from the book, the CDs also contain a variety of additional exercises, including role-playing, and a useful guide to pronunciation.
Course components:

The complete course comprises the book and audio materials. These are available to purchase separately in paperback, ebook, CD and MP3 format. The paperback and CDs can also be purchased together in the great-value Colloquials pack.

Paperback: 978-0-415-49631-5 (please note this does not include the audio)
CDs : 978-0-415-49633-9
Ebook: 978-0-203-87827-9 (please note this does not include the audio)
MP3s: 978-0-415-58827-0 (available from http://www.ebookstore.tandf.co.uk/html/)
Pack : 978-0-415-49632-2 (paperback and CDs)