Those using Langhub.com mp3, mp4, 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 Langhub.com in your blog or personal website, please mention the source, Langhub.com, prominently in the page or blog entry.
In addition, please do not provide direct links to mp3, mp4, text or pdf files on your personal website or blog. This allows web users to download the files without actually visiting the site, thereby hurting traffic (and traffic is what all of us in the Internet business live and die by). Instead, please direct them to the lesson in question, thereby allowing the users to download the files themselves. There is of course no real way to regulate this, short of requiring registration for all uses, or prompting those who wish to download a file to enter a random code before a download can begin. We do not want to have to do this, but if direct linking becomes widespread, we will be forced to resort to such measures.
Last but not least, all material and files from Langhub.com can never be sold or commercialized in any way.