Maaaaaaaaaaaaaaaaaaaaaaaaaan is this what you were texting me about this morning? You should of just asked me directly foo! Whenever you download files, you gotta go into your settings and go to your sounds and go to text message. Usually whenever you download the sound file, it has to replace one of your existing SMS sounds, they don't just add it onto there. That's just how the iphone works. You have to choose one of the sound files already on the iphone, and whenever you download one, it replaces one of the default sounds