Looks like the song itself is set to private, thus not embeddable.
They don't seem to be embeddable in the typical fashion where we can just take the url to the artist/track and generate the necessary html (I go into a bit on how we do that here). From the sounds of it they have special parameters that you need to enter for private tracks so that you can control exactly where they are embedded, but I'm not quite sure as I can't see the format nor do I have any private tracks at the moment to test. Unless I'm mistaken we'll either need to register as a soundclient in order to access their oEmbed API or parse whatever html they have for the private track embeds
it is set to private, but when you hit the share button soundcloud gives you a "private share" link, which is the one i used above. i also tried just using the link in the address bar and neither worked. I can make the hubski uploads public from now on, but i usually didn't do that before. I think private links never showed up as embedded players, but they still were listed as a clickable link.