[Whistleblower]

Hello. I have been teaching some teenagers who are I expect to be Intermediate level students. I have recently spent two lessons to learn more about what they want out of the lessons and how I could better prepare for classes. Furthermore, they are interested in taking a "Key English Test" (KET) to achieve more with their English. The problem I have is to prepare for classes suited for preparing students for this exam.

Does anyone know what is the best material to take KET Exam?

Where can I find free MP3's for listening materials such as examples in a restaurant, theatre, etc for comprehension among students in certain situations?

Finally, is there a website dedicated for the British KET? I have had a search but couldn't find out.