Free Audio Books for 40 Languages
book2 is an outstanding resource for learning the basics of many languages.
This project sticks out by offering around 1600 combinations of languages, such as Japanese to English, Chinese to Arabic, etc, to use for exposure.
The method involves learning a series of short audio sequences to become comfortable in specific situations (introductions, meeting people, getting around, etc) common in daily life.
It's interesting that this specific book will become familiar to you in itself, so recalling the same material in new languages might be accelerated. Once you've memorized the whole audio sequence in one language, why not move on to another?