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A list pays per row, and only while scrolling — and none of this is visible to any test tier: nothing renders differently and nothing fails, the app is just slower. - The track list's Art column rendered `CoverArtPath`, the original artwork, into a 24 px box while `CoverArtSmall` sat unused on the same model, with no `loading="lazy"`. 26 of 26 image requests asked for the full-size tier; now 0. - `artists-view`'s avatar fallback linear-scanned every cached album per card per frame, lowercasing two strings per comparison, inside the virtualizer's renderItem — the common case, since a locally tagged library has no artist images at all. Measured at 5 000 albums and 24 visible cards: 1.46 ms/frame -> 0.01 ms/frame. - Five components resolved selected file paths back to tracks with `tracks.find(...)`; they share `utils/track-index.ts` now. "Select all -> Edit tags" at 50 000 tracks: 3 051-6 298 ms -> 68 ms. - "Play this artist", "play these albums" and the album drag cache resolve paths in one call instead of one per album. - The column-resize drag registers its document listeners on mousedown. Two things here are load-bearing and read as sloppiness. The per-render arrow functions in `artists-view` and `genres-view` are the *only* thing changing a property of their virtualizer on a host update, and therefore the only thing repainting the cards: hoisting them to stable fields takes a selection from 1 highlighted card to 0. And a row inside a virtualizer needs `width: 100%`, because the virtualizer positions its children absolutely and a grid row otherwise shrinks to fit its content and stops lining up with the header above it.
YellowJacket
Music how it was meant to bee.
YellowJacket is a fast, cross-platform desktop music player for your local collection. It plays your files, keeps your library tidy, and helps you discover and organize your music — all in a clean, responsive interface. No accounts, no streaming, no telemetry: just your music on your machine.
Runs on Linux, macOS, and Windows.
Features
Play your music
- Plays MP3, FLAC, OGG Vorbis, and WAV
- Play, pause, seek, and volume control with a mute toggle
- Gapless, glitch-free seeking backed by a read-ahead buffer
- A queue you can add to, reorder, and shuffle, with play-next support
- Shuffle and repeat (off / all / one)
- Picks up right where you left off — remembers your track, position, and volume between sessions
- Media-key and MPRIS support on Linux, so your desktop's playback controls just work
Keep your library organized
- Point it at your music folders and it scans them automatically
- Reads tags and embedded cover art, and de-duplicates artwork so it isn't stored twice
- Incremental sync — only new or changed files get reprocessed, and deleted files are cleaned up
- Browse by album, artist, or genre, or search across everything
- Mark favorites and see what you've been listening to with play history
- Edit track tags directly when something's off
Playlists
- Create playlists, drag tracks in, and reorder them
- Smart playlists that build themselves from rules (by genre, rating, play count, and more)
- Pin a default playlist and spot duplicate tracks at a glance
Discover and clean up (powered by MusicBrainz)
- Explore — browse artists, releases, and genres from the MusicBrainz catalog, not just what's already in your library
- Auto-tag — match your files against MusicBrainz to fill in correct artist, album, and track metadata, with a review step before anything is written
- Lyrics search — find a track by a line you remember
Install
Download the latest build for your platform from the releases page.
| Platform | Download |
|---|---|
| Linux | yellowjacket-linux-amd64 |
| macOS | yellowjacket-darwin-universal.app.zip (Apple Silicon + Intel) |
| Windows | yellowjacket-windows-amd64.exe |
Prefer to build it yourself? See Building from source.
Getting started
- Launch YellowJacket.
- Open Settings and add the folder(s) where your music lives.
- Let the initial scan finish — you'll see progress as it works.
- Browse by album, artist, or genre, queue something up, and press play.
Your library and settings are stored locally:
| Linux / macOS | Windows | |
|---|---|---|
| Config | ~/.config/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\config |
| Library data | ~/.local/share/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\data |
Building from source
YellowJacket is built with Go and a Lit/TypeScript frontend, bridged by the Wails framework.
Prerequisites
| Tool | Version |
|---|---|
| Go | 1.25+ |
| Node.js | 22+ |
| pnpm | 10+ |
| Wails CLI | v2 (go install github.com/wailsapp/wails/v2/cmd/wails@latest) |
On Linux, install the system libraries Wails needs:
sudo apt-get install libasound2-dev libgtk-3-dev libwebkit2gtk-4.1-dev
macOS and Windows need no extra system packages. Run wails doctor to check your
environment.
Build
make setup # install tooling and git hooks
make dev # run with hot-reload
make build-prod # produce a release binary
More detail for contributors lives in
docs/dev/overview.md and CLAUDE.md.