@duglor said in What file tells the various mames to use their artwork cfg files with their matching name roms?:

I had a prebuilt pie.

We don't support 3rd party images, which is quite clearly outlined in https://retropie.org.uk/forum/topic/3/read-this-first.

If you don't know how the image is configured, then you won't know how to fix any issues which may occur - start with the official image from https://retropie.org.uk/download if you wish we can offer you support here in the forums.