Car Radio on RealDash

How can I make the music I’m listening to through my car radio show up on RealDash? Considering that my car originally uses a carburetor, so it doesn’t have a CAN network. I’m using an Orange Pi 3B (all functionalities are identical to the Raspberry Pi 3B+ but stronger in terms of hardware), is it possible via a P2 connection? I mean, connecting a P2 cable from the music player directly to the hardware I use for RealDash, would that work? Please give me suggestions.

RealDash is capable of showing song information and album art if music is playing on the same device that RealDash is running on. If music is playing on completely another device, there is no way for RealDash to get that information.