Not sure if I'm posting this right, I'm not into any genre of music or any specific setups for audio.
I just want to check if anyone have tried to mount an Android Tablet or maybe iPad into their car?

Let's say I have not decide the tabs to use, but is a default audio player necessary?
Is there anyway I can convert the wiring directly attach to the tabs' 3.5mm jack to play the music instead of via a2dp bluetooth?

Sorry, I'm very new to this and never had any interest in ICE as well. But for some reason I would like to have a tablet in the car, and so I came up with this idea to just use it as the HU for the stereo.

So that means it still requires a HU to work behind the tab for music output to the speaker right?

Thanks for the advise mate!