For more detailed information, be sure to check out the Import Help page (http://www.lingq.com/help/import/).
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.
They have a huge amount of articles in a wide range of topics.
The learners could choose the topics that they are interested in and the providers could record the lessons.
Usually these article directories do not bother about copying their content once you mention the original link of the article.
By the way, there are article directories in many languages.
Just have to be careful with the 'ads' in the middle of the article.
Either way, the provider could just read many articles on one topic, select ideas and create his own unique articles. This should not be difficuld since the person is reading about a topic that he has interest in.
And, if someone agrees in doing the audio, I can upload the texts.
To clarify, though, you are free to add a new provider if a provider doesn't appear on the list. Just be sure that either (1) the content isn't copyrighted or (2) if it is copyrighted, that you have been given permission to upload it on LingQ.
The magazines are not free, of course, but they are not too expensive. They have them for English, French, German, Spanish, Italian, Russian and Latin.
This is the website where they can be bought: http://eli.pdn.ipublishcentral.com/
It may be useful if you added this resource for all the languages.