[Kindred]

Код:

http://www.fileden.com/files/2012/7/13/3325459/Sure%20thing%20Lil%20Wayne%20Lyrics.mp3

The reason is highlighted in red.

This is because you use them for placeholders and shit, such as %s for specific string variable, %i for an integer variable, and so forth.

Simply try to get a new link, or upload the song to a seperate website without the %'s.