No audio heard locally when Content audio jack is used as audio only source

When connecting an audio source, such as an iPod, to the content Audio input 3.5mm jack no audio is heard from the GS500 speakers.  Note unit is not in a call. 

When using an Audio Only source (such as a stethoscope) there is a checkbox in the Audio Input settings labeled "Associate with Video Content Ports".  this is found under the Audio/Video>Audio>Audio Inputs>Type 3.5 mm When un-cheched this allows audio only sources to be played locally and to the far end The associated meter will register weather the box is checked or not.  This feature was added in 5.0