got a new tv and ps3 in my car ut the people that put it in said i needed an fm transmiter to hear the sound from the ps3. but the ps3 doesnt have an audio jack like for headphones. i need helppppppppppp. iwas thinking about the hdmi with the other end being a usb and pluggging that into the usb in the xb. but idk if it would work or not and i dont want to go buy one and have it not work . pleez help.