I usually start from the mix down page then go up top and click on "song" then "add to project page". But I also tried to just start new project and right click and import the mix down. Also even Uninstalled the whole software and reinstalled the original S1 4.1 version and tried that and for some weird reason I just don't get any playback whats so ever only on the project page. I really don't know what to do at this point or who I can contact for this issue.