
When you are done editing it, copy it back to the Pi via FTP. Be careful, though, if your rom file names also contain "USA" because you don't want to replace that, otherwise EmulationStation won't find your games anymore. (Make a backup of the file before you edit.) This allows you to do a mass find and replace for anywhere the file contains "USA".
#HOW TO USE RETROPIE METADATA EDITOR DOWNLOAD#
If you've ftp'ed into your Pi (see my instructions above in a previous post) you can download that file and edit it with your favorite text editor. In each system folder with your roms, there is a file called "gamelist.xml" which is automatically generated by EmulationStation based on the roms you have. However, you're going to need a keyboard plugged into your Pi and if you have a lot of games, editing each one can be a huge pain. I don't have my Pi here but I think you can press the "Select" button and it will give you options to do that (look at the button hints at the bottom of your screen).

When you have a game selected in your games list for your chosen system, you can edit that game's metadata manually. I like to keep it because I have some Japanese versions of games but if that isn't a concern for you you have 2 options. Is there any way to get rid of the USA at the end of each of them If you're using a mac, download Unarchiver instead of 7zip. But that is all optional and definitely not required if you arent interested in customization. And if you eventually get into customizing how your retropie loads & looks, some other downloads may be required. Some disc consoles and arcade emulators require a BIOS file be downloaded and added before playing (pretty much same process as adding a game rom - just DL the correct BIOS file and transfer it into the Retropie's BIOS folder instead of the ROMS folder as you would for the games). Other than these, the only other downloads required for " most" of the emulators are your game roms (most of atari through SNES/Genesis generations are good to go with just adding the roms to the correct emulator). These are the only three downloads required for basic setup.

#HOW TO USE RETROPIE METADATA EDITOR 64 BIT#
7Zip: more than likely you'll need the 64 bit version WIN32DiskImager - from SourceForge website: it should ask you if you want a short cut on your desktop. Everyone who is starting to build one - here are the downloads with links: Retropie - DL the version for pi 2/3 if you bought a 3: remember where you save this DL.
