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

Kannaka Radio