ok, basically what are all these different files for?
over the past few days i’ve been getting different roms but included with these are other files, for example;

i use “emc” to convert .bin.ecm to a .bin file and i know .cue files are needed to run the roms (i think thats right)

.7z = compressed file?
.ape = audio file
.bin = rom/image file?
.ccd =
.cue =
.ecm =
.img = rom/image file?
.mdf =
.mds =
.sub =

.bin.ecm = rom/image file to be converted

how do i use these files?
do i need all these files?

i’m sure others will like to find this info out too

thanks in advance

(btw i’m using a mac)