I have ringtones i bought from I-tunes and they were all on my phone at one time, but now they will not sync with my phone...they show up on itunes as ringtones and they show they are checked and when I sync, it shows they are loading onto my phone. But when I look on my phone, only one ringtone shows up. I've tried de-authorizing the computer and reauthorizing, but nothing seems to work. Any suggestions?