Downloads the GeneralUser GS
soundfont (about 32 MB) into the user cache directory, so music: "x.mid"
works without a system soundfont.
mix phx_demo.soundfont.setupThe file comes from the author's official GitHub repository (mrbumpy409/GeneralUser-GS), pinned to a commit and verified by SHA-256. Its license (v2.0) allows free use, private or commercial, and encourages use in software projects. Nothing is bundled with phx_demo; it is downloaded on your machine. Safe to re-run.