# Superseded — not folded into `openspec/specs/` **Date superseded**: 2026-05-15 **Superseded by**: `openspec/changes/enterprise-audio-controllers/` ## Why This proposal targeted MIDI hardware controllers built on the now-superseded monolithic `@suaveplan/audio-engine`. It uses the pre-tier `browser/audio/audio-controllers` target path and the obsolete `AudioPlugin` / `AudioGraph` / `PluginRegistry` API surface. The replacement (`enterprise-audio-controllers`) consumes `@suaveplan/audio-core` and `@suaveplan/audio-transport` directly so that controller patterns can drive offline renders and server-side timelines as well as Web MIDI in the browser. No code was implemented for this proposal.