FM modulator help

[Army-Killa]

I have an alpine Cda-9857 it only has 1 aux input god knows why. I have my ipod hooked up into so the spot is allready taken. I just got 2 7' visor screens installed a dvd palyer and an fm modulator. When the dvd is loading there is a far bit of static but once it is done it goes away. There is still some static while playing though but not much. What i am wondering is if there is a like AV cable box that i can switch sources while only using that one aux input? Like hook the ipod and the dvd palyer to it but switch back and forth when I am using one or the other. Thank you for any input.

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