# Playback & Sources

Listune delivers high-fidelity audio streams powered by a Lavalink v4 driver with automatic node failover.

# Audio Processing Architecture

When a user initiates playback:

1. Query Resolution: The bot queries configured search providers (such as YouTube Music, Spotify, Apple Music, Deezer, Tidal, and SoundCloud) based on server preferences.
2. Stream Routing: Audio is retrieved by the Lavalink node and processed through real-time DSP audio filters (equalizers, pitch shifting, timescale transformations).
3. Voice Delivery: Processed frames are encrypted and streamed directly to Discord voice servers.

# Supported Streaming Services

Listune natively supports direct playback and playlist resolution from:

• YouTube & YouTube Music: Standard tracks, music videos, and public playlists.
• Spotify: Tracks, albums, artists, and playlists resolved through metadata matching.
• Apple Music: Individual songs, albums, and curated playlists.
• SoundCloud: Tracks, sets, and user playlists.
• Deezer: Single tracks and playlist collections.
• Tidal: Lossless-quality streams and albums.
• Twitch: Live stream audio feeds.
• Direct HTTP Streams: Raw audio streams (e.g. MP3, AAC, FLAC web radio streams).

# Detailed Guides

• Play Queries: How to submit text queries, artist searches, direct links, and playlists.
• Queue & Playlists: Managing queue orders, deduplication, custom playlists, favorites, and history.
• Audio Filters: Applying 26 real-time audio filters, equalizers, and speed adjustments.
• Radio & Trivia: Exploring world radio broadcasts and interactive music trivia games.