All the work I have done for companies remains their intellectual property and I am not authorized to display any samples. Therefore, I have developed a few samples of similar work that belongs to me.
Here are a couple samples of English language training courses developed specifically for this purpose. Note that the audio for these samples was recorded by a single person (even though they represent conversations) as this is not a final version of a live course.
Here are some samples of my work that I made previously and are not related to language training.