Cambridge Student Arcades

Cambridge University Press publishes many ESL textbooks, and they're putting a lot of the related audio on the web for anyone to download. They also have specific listening exercises for many of the chapters. Go to their Student Arcades page and select one of the textbooks and then the book level (most of the books would be for lower-level EAP classes.) Next, either download self-study audio, or click on "sort by activity type". The listening exercises are called "What do you hear?"