Listen Audiobook Player is a feature-rich audio player designed specifically for audiobook enthusiasts. This application allows users to play DRM-free audiobooks from various sources, including popular platforms like Librivox, Downpour, and Loyalbooks. The app supports an extensive range of audio formats such as mp3, m4b, m4a, opus, ogg, aac, flac, and more, ensuring compatibility with most audiobooks available online.

One of the standout features of Listen Audiobook Player is its folder-based library system that automatically syncs with your audiobook folder, allowing for effortless organization and quick access to your entire collection. Each book should be placed in its own folder, but you can organize them within subfolders. The search functionality enables users to quickly find any book in their library. Additionally, the app offers advanced playback options, including variable playback speed (0.5 to 4x), pitch control, volume boost, equalizer settings, and silence trimming, all of which can be customized globally or on a per-book basis.

The app also integrates seamlessly with Android Auto and services like Plex and Audiobookshelf, providing users the ability to download books directly from hosted servers to their local library. With support for embedded chapters, cover art addition, and a built-in synchronization feature for current positions and bookmarks across multiple devices, Listen Audiobook Player ensures a seamless and personalized listening experience. Whether commuting, traveling, or relaxing at home, this app provides audiobook lovers with a comprehensive toolset to enjoy their favorite books effortlessly.

Listen Audiobook Player boasts an array of features tailored to enhance the audiobook listening experience. One of its primary strengths is the extensive format support, accommodating DRM-free files such as mp3, m4b, m4a, opus, ogg, aac, flac, and more. This versatility ensures that users can enjoy audiobooks from various sources without worrying about compatibility issues. Furthermore, the app supports embedded chapters for most audio codecs, making navigation through long audiobooks straightforward and efficient.

The app's folder-based library system is another significant advantage. By automatically syncing with your audiobook folder, it keeps your library organized and up-to-date. Users can browse folders or list all books at once, and the search button allows for quick access to any book in the collection. Advanced playback controls include variable playback speed (0.5 to 4x), pitch control, volume boost, equalizer settings, and silence trimming, all customizable either globally or for individual books. Cover art can be added from embedded art, images in the book folder, or easily downloaded within the app, enhancing the visual appeal of your library.

Integration capabilities further distinguish Listen Audiobook Player. It supports Android Auto for hands-free listening while driving and integrates with Plex and Audiobookshelf to download books directly from hosted servers. Additional features include bookmarking, position history, Bluetooth play/pause/skip support, widgets, lock-screen controls, and Tasker/Llama integration for automation. The sleep timer, auto-rewind function, custom skip times, and headset button actions provide users with a highly customizable and convenient listening experience. These features collectively ensure that Listen Audiobook Player meets the diverse needs of audiobook enthusiasts.

When evaluating an audiobook player, the size and authenticity of its music library are crucial factors. Listen Audiobook Player offers access to a vast collection of DRM-free books from various sources like Librivox, Downpour, and Loyalbooks. This ensures users have a wide selection of titles across multiple genres.

The application allows direct downloads of curated books from Librivox, featuring classics such as 'The Count of Monte Cristo' and 'Pride and Prejudice'. By focusing on DRM-free content, the app guarantees that all materials are legally obtained and free from copyright restrictions, providing peace of mind for users.

Moreover, integration with services like Plex and Audiobookshelf enables users to download books from personal servers, expanding the library's reach. This feature not only enhances accessibility but also assures users of the content's legitimacy, making it a reliable choice for audiobook enthusiasts.

Audio quality is paramount for an immersive listening experience. Listen Audiobook Player supports multiple formats including mp3, m4b, m4a, opus, ogg, aac, flac, and more, ensuring high-quality playback. The support for embedded chapters in most audio codecs adds another layer of convenience for users.

The app provides variable playback speed (0.5 to 4x), trim silence, pitch control, volume boost, equalizer, and balance settings. Users can set global defaults or customize preferences per book, allowing personalized audio adjustments tailored to individual tastes.

Additional features like the option to convert books to Opus format ensure minimal loss of sound quality while significantly reducing file sizes. With these robust audio quality options, Listen Audiobook Player caters to audiophiles who demand the best in their listening experiences.