kami 8f33744f8c fix(playback): remove the stutter and gap between tracks
The isPlaying subscriber is unselected. Every store write during Vibe's
feedback/replan handshake called play() on the element that had just ended.
That replayed its final buffered milliseconds until the next source loaded.
Gate that subscriber and the seek subscriber on an actual value change, and
never resume a finished element.

Then close the gap the handshake leaves behind. The engine now drives two
<audio> elements. The next track buffers into the idle one 20s early. The
handover starts before `ended`, so the round-trip happens under the outgoing
tail. With a crossfade, that tail fades out under the new track. With crossfade
off, the new track waits in silence and starts the moment the tail ends.

Both are configurable under Settings -> Transitions and persist to
localStorage. Preload is on and crossfade is 400ms by default.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-05 21:18:28 +04:00

muzick

A high-performance, distributed music orchestration and recommendation platform.

Overview

muzick is designed to manage a local music library while providing an "infinite vibe" listening experience. It bridges the gap between a local filesystem and advanced discovery engines through a tiered recommendation architecture.

Tech Stack

Frontend

  • Framework: React
  • Routing: TanStack Router
  • Data Fetching: TanStack Query (with Look-ahead Buffering)
  • State Management: Zustand (for Session/Vibe state)
  • Styling: CSS Variables (Customizable Themes)

Backend

  • Runtime: Node.js / TypeScript
  • Framework: Fastify
  • Task Queue: BullMQ (via Redis)
  • Search: Typesense

Infrastructure & Data

  • Database: PostgreSQL (Source of truth for metadata, relationships, and session state)
  • Cache/Queue: Redis
  • Audio Analysis: Essentia (via Worker processes)
  • External Metadata: MusicBrainz, Discogs, LRCLib, Cover Art Archive

Core Concepts

  • The Rolling Vibe: A continuous, evolving stream of music that uses a "Rolling Window" of tracks. It interleaves owned library tracks with high-probability "probation" tracks (external discoveries).
  • The Dislike Lifecycle: A multi-stage state machine that protects users from accidental deletions while ensuring the library stays clean.
  • Tiered Similarity: Instant metadata-based matches, followed by deep audio-feature similarity.

Getting Started

Prerequisites

  • Docker & Docker Compose

Running Locally

Vibe uses the same per-user identity convention as the rest of the API: x-user-id when supplied, otherwise the local default user. Each user's Vibe session and listening history are isolated from other users.

docker-compose up -d
S
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