I wrote a free and useful Windows audiobook player, that makes listening audiobook for language learners more convenient and easy. Unlike ordinary MP3 players it works in terms of phrases, not seconds. So you can select next or previous phrase, ask player to repeat last phrase, instruct player to choose smaller phrases to simplify listening.http://www.povalyaev.com/
Feel free to write your suggestions or report bugs! I hope it will help you to learn English or any other language.