Creating an account, class and students seems to be simple. See blow for information on Terms of Service. I am excited to see how this can be used with text from a site such as Newsela with the added soundtrack enhancements to engage students with text right at their level. Another really great tool natural to reading text using Booktrack is that you can adjust the pace of the track to provide the reader with a more successful pace of reading. Students that create and publish their own writing through this site can then add a soundtrack to their own work, adding interest and excitement.
The Terms of Service on this site indicate you cannot create and account for kids under 13 although that is unclear as the teacher blogs are very clear about its use with kids at the elementary level. I have written the help desk for clarification to see if that only applies for the creation studio or if it apples to all around use. I'll update this post if I hear back.
Here's a great video that will give you an idea of how this tool works: