Can play DVD or listen music while navigation is running?
from In Dash Car GPS Navigation System Professional OEM Manufacturer
So, while the navigation running, you can enjoy DVD playing or music listening simultaneously.
However, during the navigation process, when voice prompt activated, the sound of the audiovisual system will be interrupted and switched to the navigation voice prompts. Only voice prompts completed can the sound of the audiovisual system be restored.
In order to let the driver clearly figure out the real-time navigation information,it’s advised to not mix these two sounds mistakenly.