Converting .nkit.iso to .iso on Manjaro Linux

I know the website has download links for NKit and the GameCube and Wii partitions, but that version of NKit is for Windows. Is there a way to get this to work on Linux? I tried to download the Windows versions and take their partitions and put in in my Linux version of NKit, but it's not working for Wii Sports. Is this because the partitions are for some reason only for Windows, or is there more I'm missing here, like files outside of the recovery directory that need to copied?