If you download Soundabout from the app store, it will allow you to choose audio output and negate the Hudly speaker.
***** Users reporting that this method is hit or miss (iOS)*****
When you're wanting to cast your phone screen to your Hudly Wireless but want your audio to play through your car via bluetooth, a simple protocol will allow you to do so and override Apple's default system which tries to cast both sound and visuals to the same place.
Step 1) Connect to your Hudly Wireless as normal
Step 2) Open the Bluetooth menu on your phone (Settings > Bluetooth)
Step 3) Connect to your vehicle's Bluetooth audio
And now your audio should be bifocated between your vehicle and Hudly!
There was one thing that always worked for me though. This will only work on stereos with bluetooth. The usual thing that people does when they get into the car is turn it on and then the accessories such as the hudly and stereo will power on as well and then your phone’s bluetooth will connect automatically to the stereo because it has paired with it before. That means that it will most likely connect before you even mirror your phone to the hudly device. As we know though, what happens when you mirror your phone screen on IOS is that it redirects the audio to the hudly device without being able to change it back to the stereo without losing the screen mirroring. What I do and is always working when I do it is that I turn my bluetooth off and then mirror my phone to hudly. When this is all done and I can see my screen on the hudly HUD, I turn back my bluetooth on which will then try to connect automatically to the previous accessories it has connected with, including the stereo. This will redirect the sound back to my stereo without disconnecting the screen mirror in hudly.
This has worked 100% of the time in my car.