[SS11184]

Ok wut i'm trynna do is charge my phone using a car charger and play music thru my car...using the HTC adapter and using the optional audio output (used for regular stereo headset). When i plug the all up the phone cuts the audio part off and charges the phone...but i kno its possible with the reg. HTC headsets u get with the phone? so if there is a reg. hack or jus not possible can someone let me kn