Don't give up. The link to your song
is a good link and opens the correct soundcloud page...
You have correctly placed the link in your post here but the song can't be found at the Soundcloud site. So...
All you need to do is repost your song on Soundcloud so the link correctly goes to a live song.
Here on PGMusic Forum in the User Showcase select New Post and when on the New Post screen, select the Full Supply Screen. In the toolbar, the second icon from the left, beside the smiley face, is where you will drop the url to your Soundcloud song for your User Showcase post.
Looking forward to hearing your first song post..
Charlie
PS: Welcome to the Forum.