Apart from the Learn While You Sleep CD, which is included, we do not provide any other audio recordings. All the details and tips for your personal combination and acquisition of composed subject matter to learn your desired foreign language or other field of knowledge, is provided in the text book.

The CD may be unsealed and used for learning while you sleep for the purposes of testing the method during the trial period. The 21-day trial period from receipt of the goods with right of return is not affected.