[jwight]

When you say media system what exactly do you mean? A photo would help. Any 451 newer than 2010 should have both Aux and USB...

"Audio system basic*
The audio system basic contains the
following functions:
Radio (FM/AM)
Radio Broadcast Data System (RBDS) and
radio text
AUX and USB socket (Y page 99)"

 

[jwight]

That is really strange, but you might be able to pick up a 451 USB cable and connect it to back of the radio.