I need help with problems on roms with mostly all the emulators like Retrobat, Batocera, Kinhank, Retroarch & so on that problem is. Why does all the Playstation 1 games have no background music and if not that with will also be no sound effects or voice overs of characters.  

Is there a way to fix this problem if so comment below or show me a video of this fix if someone have done it. I will be talking about my own experiences with this problem.