I have a a late 2004 model F-150 XLT that is equipped with the standard single CD player/radio. Does it not have a plug in for an MP3 player? Before I bought this truck in 2004, I had a 2000 Ford Ranger XLT with the standard radio/single CD player. It had a plug in the back in which you could plug in an external audio source. Is it possible that this newer (and more expensive model) doesn't have it? In that case I would replace the standard CD player with one that allows me to plug in my Toshiba Gigabeat.