Here's a quick description of my problem... I'm at the office, phone is on vibrate, i have my headphones plugged in and listening to pandora. I get a phone call, so I have to unplug my headphones and answer the call. As soon as the person hangs up, pandora goes back to playing full blast in my office before i can get my headphones plugged back in. Is there an app that lets me put my phone on vibrate, and also silences the audio from any music or videos from playing from the speakers and only lets it come out of the headphone jack? currently, when you put the phone on silence or vibrate, audio and video sound still plays through the speakers.