So I purchased a car charger mainly for the purpose of being able to listen to Slacker or my music while driving and being able to keep the screen on (to be able to take a peek at who is playing, etc.) Problem is, while the phone is charging, I get a very audible buzzing sound while I have my 3.5mm jack plugged in also. It is not the charger, my wife's does the same thing when I use it. Is there any sort of work around???