Won't connect or something...

I got Smartftp not too long ago and downloaded some cd's and stuff and everything worked fine. The other day I went to get some music and I found the IP adress and pasted it in... The files pull up but when I try to drag and drop them it gives me the following message in the bottom....

227 Entering Passive Mode (213,152,100,158,5,29)
Opening data connection IP: 213,152,100,158,5,29 PORT: 1309.
RETR 02-story_of_the_year-until_the_day_i_die-rep.mp3
550 Permission denied

Does anyone know why? or if this is a setting?