"The archive contains a .elf version that will run in lxdreams, and presumably other emulators, and a .bin version that will run via an SD adaptor and DreamShell RC4. It will presumably run if you somehow burn it to a CD, but it’s been so long since I’ve made a CD of Dreamcast homebrew that I’ve completely forgotten how to do it. Plus I’m on a different OS and don’t have an optical drive any more."
Having recently got a new MacBook, I know exactly how ant512 feels! Anyhow, before this becomes an Apple-bashing humblebrag circle jerk, check out VasiliyDC's video of HankyAlienDC in action: