GPS and music volume

[johnnybiggles]

I'm using the built-in GPS and also Telenav (which I think is the navigation system the older Sprint phones like my old Palm Pre used) and when playing music, it turns the volume down for the music when it's time for it to tell you turn by turn directions, but the GPS does not have any sound. It's supposed to turn the music down then speak like on my old phone (worked like a charm) but in both I get nothing. Anyone else having this issue? Is there a solution for this?

 

[johnnybiggles]

Somehow it randomly started working while fumbling back & forth between Pandora and the Nav...go figure!