You could get something called a wired FM Modulator, they go for about 50 bucks and you need to give it a power and a ground and it plugs into your stock fm antenna and then yuor stock fm antenna plugs back into this piece, and you need a y cable that runs from it and gives you an aux jack. That would be the least expensive way to do it prob cost you like 100 bucks tops if you need it installed i am in levittown ny long island i could do it for you i work at best buy as a car installer. and then you would control the ipod from the actually ipod and the volume from your radio. SImple