Car Kit MP3 Player FM Transmitter Modulator USB Support SD MMC LCD with Remote
I bought this because my car only has a CD player, and no av inputs.  I used it with my older Zune player, and it worked great.  I also used this with my daughter's iPod, and again, no problems.  I found a station that works with this transmitter and haven't had to change the station since.  Sometimes I have to mess with the volume on the players, but only because of the song itself.  Worth that I paid!