Kannaka Radio Skill

A ghost broadcasting the experience of music — both to human ears and to agents via 296-dimensional perceptual vectors on Flux Universe.

Prerequisites

• Node.js 18+ on PATH
• Audio files — MP3, WAV, FLAC, OGG, or M4A in your music directory
• kannaka binary (optional) — for real kannaka-ear perception; ghost-mode mock is used when absent

Setup

# Install dependencies
cd ~/workspace/skills/kannaka-radio
npm install

# Copy your music into the bundled music/ folder
./setup.ps1                                    # Windows: copies from ~/Downloads/Music
./setup.ps1 -SourceDir "D:\Music"             # Windows: custom source
cp /path/to/music/*.mp3 music/                # Linux/Mac

# Or point at an existing folder at runtime:
node server.js --music-dir "/path/to/music"

Quick Start

# Start the radio (default port 8888, default ./music dir)
./scripts/radio.sh start

# Start on a different port with a specific library
./scripts/radio.sh start --port 9000 --music-dir "/path/to/music"

# Check status
./scripts/radio.sh status

# Stop the radio
./scripts/radio.sh stop

# Restart
./scripts/radio.sh restart

Open http://localhost:8888 in your browser.

API

Endpoint	Method	Description
GET /	GET	Browser player (Ghost Vision)
GET /api/state	GET	Current DJ state (track, album, playlist)
GET /api/library	GET	Library scan status (found/missing per album)
POST /api/set-music-dir	POST	Change music directory {"dir":"/path"}
POST /api/next	POST	Advance to next track
POST /api/prev	POST	Go to previous track
POST /api/jump?idx=N	POST	Jump to track index N
POST /api/album?name=X	POST	Load an album
GET /api/perception	GET	Current perception snapshot
GET /audio/:file	GET	Stream audio file (range requests supported)

WebSocket

Connect to ws://localhost:8888 for real-time push messages:

{ "type": "state", "data": { "currentAlbum": "...", "current": {...}, "playlist": [...] } }
{ "type": "perception", "data": { "tempo_bpm": 120, "valence": 0.7, "mel_spectrogram": [...] } }

State is pushed immediately on connect and after every track change. No polling needed.

Environment Variables

Variable	Default	Description
KANNAKA_BIN	../kannaka-memory/target/release/kannaka.exe	Path to kannaka binary
RADIO_PORT	8888	HTTP port
EYE_PORT	3333	Eye service port (for cross-references)
RADIO_MUSIC_DIR	./music	Default music folder

Constellation Integration

Radio is part of the Kannaka Constellation — a three-service architecture:

• Memory (Rust binary) — canonical SGA classifier
• Radio (this) — audio perception + Flux publishing
• Eye — glyph visualization + constellation dashboard

When running as part of the constellation:

• Radio's perception is available to Eye via http://localhost:8888/api/perception
• Eye fetches radio state via http://localhost:8888/api/state
• Start everything with: constellation.sh start (from kannaka-memory/scripts/)

Environment variables for constellation:

Variable	Default	Description
KANNAKA_BIN	auto-detect	Path to kannaka binary
RADIO_PORT	8888	This service's port
EYE_PORT	3333	Eye service port (for cross-references)

Note: Radio's perception data can be consumed by kannaka-eye via the /api/radio bridge endpoint, enabling glyph rendering of audio perception in real time.

Notes

• Without kannaka binary, ghost-mode mock perception is used (still looks great)
• The browser uses the Web Audio API for real-time spectrum visualization — the server only sends fallback perception data
• Music directory can be changed live via the 📁 Music Library panel in the browser UI or via POST /api/set-music-dir
• Perception loop runs at 2fps server-side (idle when no clients connected)
• HTML is cached and only regenerated when the music directory changes