Audiofile NotesOccasional notes from Audiofile Engineering on building audio software: Mac and iPhone apps, audio engines, plugin hosting, and shipping on Apple platforms.https://audiofile.engineering/enI rebuilt a fifteen-year-old Mac audio app with an agent fleethttps://audiofile.engineering/notes/rebuilding-fidelia/https://audiofile.engineering/notes/rebuilding-fidelia/One engineer, a fleet of coding agents, and a music player rebuilt for modern macOS: sandboxed Audio Unit hosting, deterministic replay harnesses, and the rules that made it work.Wed, 17 Jun 2026 00:00:00 GMT