Alright, I'm gonna have to open a ticket at their support forum, but my newly registered account there is still pending approval. Meantime, you can prevent the url from getting mangled by embedding it in a code tag, like thus:
Code:
http://8tracks.com/jguer106-39/floating-on-cloud-nine
I realize that's not ideal as it isn't clickable, but at least it lets you communicate the address successfully while I see about getting this fixed.