ya i've heard of that mod, where you have to have a burned cd with nothing on it but silence so that you could get the audio from the ipod to the head unit. maybe there is one that can be done without the cd and just trick it the same way but either way you wouldn't be able to use the cd changer at the same time. what i ended up doing is putting in a radio fm modulator but the sound isn't great quality, i could technically use the cd changer if i still had one though