I love this PI image to get Mame up and running on a PI. But, i do not have the time to learn all the linux command line codes.
Portable Mame PI 2 has two partitions on the SD card. One is accessible through Windows, the other is only accessible through linux. All the Mame files are on the linux partition. So I made 2 SD cards, one with Portable Mame, the other with Rasbian. I put the Rasbian SD card in my PI as the main boot, then I put the Portable Mame SD card in a USB adapter and plugged it into the PI. I ran Rasbian as desktop (startx) then I had screen that looked more like Windows. The Raspbian desktop let me access and move/copy files to another USB flash drive. So I copied the Mame files onto it and now I can plug it into a regular Windows PC and work on settings. Once complete, I will copy the files back into my Portable Mame SD card through the PI using Rasbian.
Seems to work so far, and much easier for me.