Listening practice for students through self-grading quiz pages, comprehension quizzes, and study material. Requires Windows Media Player or RealPlayer. The owner of the site is esl-lab.com. This ESL listening Web site created by Randall Davis helps ESL/EFL students improve their listening comprehension skills through practice with self-grading quiz pages. Randalls ESL Cyber Listening Lab, For English as a Second Language.