Audio 30APS USB Connection
I have MB C180K/w203/2002 Year. it has Audio 30APS (as following image, it has Navigation , CD and Radio.)

This Audio play only CD disk with max 19 musics(burned with NERO MP3 CD). So i thought it would be better to transfer music on my USB Flash Card , plug in Audio in car and listen to the music from USB Card. But i have no idea how to do it , i try to find person who can install USB connection in my car but could not find yet. So can anyone help me ? i saw some Articles where people write that i need some adapters which costs approx. 300 $ , but it's too expensive. I just need 1 Usb cable in car on which i can plug my USB and play music from it.
Thanks



