AUX doesn't work
 

So I was fiddling around with the center dash grille in my '04 CLK500 while listening to my Ipod through the AUX jack. Then I hear a pop and no more sound. The radio and CD player still work, so I'm wondering if I caused a short in the AUX line. There are some audio wires in that cavity where the center speaker is, but none of them look damaged. It is a COMAND system.

I checked a bunch of fuses but couldn't find any that have blown. Does anyone know if there are fuses inside of the COMAND system? Like one for each audio channel coming in?