I'm not sure what happened, but my custom ringtone charge for several people (it's done this before but was able to change them back) and now I can't change it to anything else. It's seems like it locked, but it's not all my contacts. Everyone with the ringtone (that was changed due to the sync or something) can't be changed. I can change the contact with the default ringtone. Any idea on what I can do to unlock this?