Adaptunes w/Kenwood USB>iPhone plug?
 

I have a KMR-440u which has the faceplace USB plug - I plug a standard iPhone USB cord into the radio, and play from the iPod or Pandora.

I'm curious if this app will work through the dock cable, as the description says 'Note - Some Bluetooth headsets and audio docks are not compatible with automatic volume control in Adaptunes'

I just bought the app, just curious if there is a trick or anything I should know to get it to work.

doubt it will work. Plugging in to the bottom of the iphone generally disables its volume control abilities.