Hey shank, when I got my Gen 4 Taurus, it had the button on the reciever for a cd changer. I got the NeoChanger which you can use the factory cd button, if you buy a different changer, they said you wouldn't be able to use the button. I don't know why not. But anyway, it was worth it. It works great. Although I noticed when I burn a cd, if the weather is cold or the first couple min, the sound is scratchy. I don't know why, it's only with burned cds. But when I shuffle to another normal cd, and go back, it's fine. Who knows but I got used to it.