Distortion when playing back audio, left and right channels.

Recently, my iPhone 4s has been producing distortion in the right channel when playing back music and/or making VOIP calls. It is now starting on the left channel as well. Making cellular calls is fine (no distortion). Playing music through the doc connector is fine. Playing music through bluetooth is fine. Have I fried my onboard DSP for the onboard audio output devices? When I record video, audio is unbearably distorted.