mrknicks

I don't have an IPOD but I do have an MP3 player with a USB connection. I was able to order the USB cable for the glove compartment online for $22 as opposed to the $50 the dealer wanted. It arrived today. When I connected it, the AMI said that it either isn't available or doesn't support the format. The MP3 player says ready so I assume it isn't supported.
According to the Sound Manual, I thought there was a 3.5 Audio connection but can't seem to find it. I have a power outlet in the center console, but no "headphone jack". Am I missing something or do only certain packages of the A5 have them?
Thanks for any help.

2011 A5 Coupe Black on Black Premium Plus, no Nav