I have an online course that will launch Jan 28. I'd like to email the group of students one track every few days via my Gmail account or via a Mail Chimp newsletter. I currently have the tracks to private because it is a paid course. I do not want them open for the general public. When I sent a track to someone on my team, she could not open it because it is "private", however, I am doing an online course and receive tracks on Sound Cloud and they are set to private, but I can play them just fine. How can I do this for my course? Thank you!