Those using mp3, text and pdf files, as well as the text within the lessons, are allowed to do so for personal use, teaching, or any other noncommercial use.

If you choose to feature content from in your blog or personal website, please mention the source,, prominently in the page or blog entry with a link back to the url in question.

In addition, please do not provide direct links to mp3, text, image or pdf files on your website or blog. Instead, link to the page in question.

Last but not least, all material and files from can never be sold or commercialized in any way.