I think that's a compilation of roms and emulators ready to use, but some maybe outdated since they can't re-compile the disk every time a little update comes out. Go to Xbins to get the emulators (in the apps>emulators section), and read the readme files or any documentation before you FTP the emulator over. I believe it's only legal to emulate games you still own (or homebrew roms), so make sure you have the carts somewhere if you're emulating retail games, there are various places to get roms online, google is your friend.