I have a car with a 3.5mm jack for aux-in. It has also BT for my phone. In my phone, I have deezer (more or less like Spotify) that I use to send music to the car audio system.
It works fine, but since the plug is inside the glove box, I have to plug the phone every time and I guess that this will break the phone's jack one day.
Unfortunately, there is no "clean" way to bring the aux-in from the glove box to the gear shift where I'd like to have the phone and, anyway, it will not solve the plug in-out wearing problem.
Now the idea: since I cannot use the phone's BT to stream the music because I need it to connect to my car's freehand system to answer calls, I was thinking of using a Raspberry Pi as Wifi receiver of the stream from the Android phone.
Do I need something to stream audio from the phone to the Raspberry? And what should I install on the Raspberry Pi to act as a wifi receiver audio streamer?
Another solution is to use a Raspberry to stream the music via the Linux player to something (another raspberry?) inside the glove box that can receive a BT or wifi stream and output it to the car's jack.
Basically, I just want to sit in the car, run the deezer app and listen to the music.
I hope I'm understandable and sorry for my bad English.