DOI: 10.1145/1146816.1146825Portable devices and wireless connections are creating a new scenario in which digital information is entering our lives in a massive way. In this article we consider MP3 audiobook applications and propose an approach to completely restyle the applications to the current mobile and multimedia scenario. Our mechanism introduces multimedia contents (images and text) into the audiobook application and synchronizes them with the MP3 audio stream. Multimedia contents are protected by a security system that ensures perfect audio quality and full access to multimedia contents only to a legal user. A distribution architecture and a player that use the proposed mechanism are also presented.