Features:

No ads. No hidden features for extra money.
* Plays MP3, M4B, M4A, WMA and OGG files (without DRM).
* The playback speed of MP3 files is adjustable (from 0.5 to 3.0x)
• * Equalizer.
* Covers can be used embedded, present in the book folder or easily downloaded directly from the application.
* Bookmarks.
* Playback history. Automatically saves audio book playback positions.
* Search for chapters. Skip the next/previous chapter/file or go to any file (enabled in settings). Embedded m4a/m4b chapters are not supported yet.
* Support Bluetooth play/pause/rewind.
* Desktop widgets 1x1, 1x4 and 2x4.
* Lock screen widget (Android 4.2+).
• Control from the lock screen (Android 4.0+)
* Queue playback. Automatically starts the next book in the queue when the previous one ends.
* Pressing anywhere in the background enables playback/pause, the left/right gesture is used to rewind.
* Sleep timer with the ability to reset it by moving the phone, setting custom notification sounds, and other settings.
* Automatic adjustable rewind depending on the time of the last playback.
* Setting user parameters for the short and long rewind buttons.
* Set custom colors for progress and time scales.
* Playback and pause triggers when connecting/disconnecting the headset, Bluetooth (can be disabled in the settings)
* Support headset button to start playback/pause (double tap to go back).
* Ability to hide the player from the notification bar when playback is stopped.
* Actively developing, new features are being added!

Changes in versions:

3.2.4
- New button for home screen widgets that will directly open the library in a dialog popup to quickly switch books.
- New background option to custom crop an image to display exactly what you choose.
- Landscape and portrait backgrounds can now be set to different images, or differently cropped images.
- New setting to draw the book progress bar thin.
3.2.4
- New background option to custom crop an image to display exactly what you choose.
- Landscape and portrait backgrounds can now be set to different images, or differently cropped images.
- Moved sync button off the Action Bar and into the menu overflow if both auto push and auto pull are enabled.
- New setting to draw the book progress bar thin.
- Adjust displayed progress text, skip, and auto-rewind times according to the current playback rate.
3.2.3
- New settings to draw the book progress bar thin. Touch to enable area is not affected. Setting > UI Look > Thin Book Progress Bar.
- Adjust displayed progress, skip, and auto-rewind times according to the current playback rate.
- Addet curret/total track number to the lock screen.
- Remember pause time when app was exited for use in auto rewind calculation.
- More changes/messages added for Android 4.4 sd card security restrictions.
- Fixes for some reported crashes.
3.2.2
+ Fixing cover art issues using SD cards with KitKat (Android 4.4+).
3.1.1
Recent changes:
+ Sync book position and bookmarks to multiple devices!
+ Polish translation added.
+ Show progress percentage when progress bar is enabled.
+ Set the system status bar and navigation bar to match the Action Bar color. Android 4.4+ (KitKat)
+ Full screen immersive mode. Menu > Full Screen, or pinch zoom on book cover image. Keep awake option available when full screen is on. Android 4.4+ (KitKat)
3.10
- New icons.
- Blacklisted Bluetooth devices now ignore the play event that some Bluetooth devices send when connecting.
- Auto pause triggers are now ignored if audio is not playing through the device triggering the event. For example, unplugging a headset while listening with Bluetooth will not pause.
- Bug fixes.

In the distribution:

New and previous versions with improved Russian pre-translation).

Installation:

Drop the file on the device in any place and by any file manager under Android (for example, ES Explorer) install it by clicking on the file (In the security settings of the device there should be a check mark "Unknown sources"). You may need to uninstall a previously installed version.