klaudio

Add sound effects to your Claude Code sessions. Plays sounds when Claude finishes a task, sends a notification, and more.

Quick Start

npx klaudio

The interactive installer walks you through:

1. Choose scope — install globally (~/.claude) or per-project (.claude/), or launch the Music Player
2. Pick a source — use a built-in preset, OS system sounds, scan your Steam & Epic Games library, or provide custom files
3. Preview & assign — listen to sounds and assign them to events (tab to switch between events)
4. Toggle voice summary — enable TTS to hear a spoken summary when tasks complete
5. Install — writes Claude Code hooks to your settings.json

Sound Sources

Built-in Presets

Ready-made sound packs (Retro 8-bit, Minimal Zen, Sci-Fi Terminal, Victory Fanfare) that work out of the box.

System Sounds

Use your OS built-in notification sounds (Windows Media, macOS system sounds, Linux sound themes).

Game Sound Scanner

Scans your local Steam and Epic Games libraries for audio files:

• Finds loose audio files (.wav, .mp3, .ogg, .flac, .aac)
• Extracts packed audio (Wwise .wem, FMOD .bank, .fsb) using vgmstream (downloaded automatically)
• Extracts Unity game audio from .resource files (PCM decoded directly, Vorbis converted via vgmstream)
• Parses Wwise metadata (SoundbanksInfo.json) for descriptive filenames
• Categorizes sounds (voice, ambient, music, SFX, UI, creature) for easy browsing
• Caches extracted sounds in ~/.klaudio/cache/ for instant reuse

Custom Files

Point to your own .wav/.mp3 files.

Music Player

Play longer game tracks (30s–10min) as background music while you code:

• Shuffle all — scans all cached game audio, filters by duration, picks random tracks continuously
• Play songs from game — pick a specific cached game and play its music
• Controls: n next, space pause/resume, esc back
• Background scanning — starts playing as soon as the first track is found, keeps indexing

Requires previously extracted game audio (use "Scan local games" first).

Voice Summary (TTS)

When enabled, klaudio speaks a short summary of what Claude did after playing the task-complete sound. Uses Piper for fast, offline neural text-to-speech (auto-downloaded on first use, ~40MB total).

• Toggle with t on the scope or confirm screen
• Reads the first 1–2 sentences of Claude's last message (up to ~25 words), preserving version numbers and filenames
• Uses the en_GB-alan-medium voice (British male)
• Hooks receive data via stdin from Claude Code — no extra setup needed

Features

• Auto-preview — sounds play automatically as you browse the list (toggle with p)
• Multi-game selection — pick sounds from different games, tab between events
• Category filtering — drill into voice, ambient, SFX, etc. when a game has enough variety
• Type-to-filter — start typing to narrow down long lists
• Duration filter — type <10s, >5s, <=3s etc. to filter by audio length
• 10-second clamp — long sounds are processed with ffmpeg: silence stripped, fade out baked in
• Background scanning — game list updates live as directories are scanned
• Re-apply current sounds — re-running the installer shows your current selections with a quick re-apply option

Events

Event	Triggers when
Notification	Claude needs your attention
Task Complete	Claude finishes a response

Uninstall

npx klaudio --uninstall

Requirements

• Node.js 18+ (Claude Code already requires this)
• Claude Code installed
• For packed audio extraction: internet connection (vgmstream-cli downloaded automatically)
• For voice summaries: internet connection on first use (Piper TTS downloaded automatically)
• For best playback with fade effects: ffmpeg/ffplay on PATH (falls back to native players)

Note: Currently only tested on Windows. macOS and Linux support is planned but not yet verified.