Thank you, Alex. So, this is the link, Oscar:
http://www.lingq.com/learn/en/store/62453/13905.... And thank you for inviting me as a friend, I have already accepted.
If you are interested in animal comunication and in neuroscience, I have a lot of interesting lectures in video on my computer, but I must see wheter I can find the text and the audio for them. I don't know if they are copyrighted, either, though they'are in YouTube. But I can always put the links on your page.