I have a CD player in my truck, but I use my mp3 player for lots of stuff stored on it and run it through one of those little short-range fm transmitters that you play on an unused portion of the fm radio band.

I had been thinking about replacing my receiver (circa 1985) because it loses the memory settings for the radio stations I program into it. But other than that it sounds wonderful, so I haven't replaced it. I guess I need to figure out if there's a battery (I opened it and didn't seen on, but maybe in 1985 they didn't look like either the standard Duracell type or the flat quarter-sized disk that are in lots of computers and such.)

SRS