I had my phone charging for a few hours, and out of the blue, it starts playing one of the many mp3s I have on the phone from the loud speaker. When I got to the phone, The home screen was normal. I held the home button to see what apps were recently opened and none of them were music related. I hadn't even listened to any mp3s on the device in days. I am completely lost as to why this happened. After the song played, it stopped and no other song followed.