Now Implemented!
Description
The sound options should have a choice to lower the music volume when the Navigation has something to say and bring it back to the previous volume after that.
Competitive/Pricing/Notes
Most phones with GPS already do this.
Right now, the two sounds are overlaid, and the only thing we can do is turn the volume during the time the Navigation voice occurs
Status
Implemented around 2017. The Navigation voice volume level can be set independently from the music audio.