Obi 3.5 beta (released on August 7, 2014) Obi 3.5 beta presents complete support for producing navigable audio only EPUB 3 publications. It introduces the capability to import the structure and/or audio from the existing EPUB 3 publications, as well as enhances the EPUB 3 export making it in sync with the latest revision of navigable audio only EPUB 3 guidelines. Additionally, it enables structure