my sony indash stereo is about 4 years old but does have the usb ipod port on the front, form what i searched it says i can plug my iphone into it. question is can i, and if i do use this to listen to my music form my iphone will the phone then work threw my stereo, will it interrupt the music to let me know i have a call and will i be able to hear the caller on my car speakers. in other words will it work just like if i didnt have it connected to my stereo. figured that would begreat because id be able to listen to my music without having to try to hear if my iphone is ringing over the stereo.