Go to: X:\Program Files (x86)\Steam\steamapps\common\Carmageddon_Reincarnation\ZAD
Extract audio_music.zad.

Open the new folder and click until you see the Race and Menu folder. Cut and paste either one to a new location. If you have a music specific location on your computer: Paste it there.

After you pasted the Race or Menu folder to a new location. Rename it to something cool, like "cool".

Go to the Steam. Open the Music Details.

Click the small plus (+) sign.


In the new screen, Click Add.


Add your cool new music folder.

Select your new folder in Music Details Screen.


Now hit add to Queue or Playlist.

In the Settings turn off music.

When playing the game.
Use the steam overlay (Shift+tab) to access the music player by clicking Music at the bottom.

If you have any other music you'd like to listen to when playing. Add it to the music folder.

That's it.