Here's an odd one. 4.3.1 JBed iPhone 4 that no longer makes any noises by itself (it will when I go to change the ringtone). That included TXT messages, streaming radio, ipod, games etc. It will make the sounds when I plug in my headphones. I know the built-in speakers work as it plays my ringtones just fine when I go to change to another one. When I press the + or - it says "Ringer (Headphones)". I assume it's stuck on that mode...I just can't get it off that. Any help?