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Plan 016 B2, phase 2. Phase 1 took the seek bar and the volume out of the phone's bottom bar -- 4px of height is not a thumb target, and a phone's volume belongs to its hardware keys -- and promised them a full-screen view. This is it, reached from a button over the mini player's cover art. **It composes the transport rather than reimplementing it.** The same `seek-bar`, `player-controls` and `volume-control` the desktop bar uses; a phone layout that copies them is a second transport to fix every bug in, and the seek bar in particular carries interpolation rules that took a plan of their own to get right. The seek bar thickens its own track below the breakpoint, in its own stylesheet, because the track size lives on a wa-slider inside its shadow root where a custom property from the host cannot reach. **It is a detail view, not a primary one.** It is somewhere you go and come back from, so index.ts pushes the current view and Back pops it -- which is also why it is not a fifth tab: a tab you cannot leave by pressing it again is not a tab. Two things came from reading a screenshot rather than from a failing test, and both were invisible to assertions that were individually correct. **The mini player was still under the full-screen view**, repeating it in 4em of an 844px phone. index.css hides the bottom bar while `#main-content[data-active-view="now-playing"]`, through `:has()` rather than a class toggled from index.ts, because the active view is already published as an attribute. That takes the queue button with it, so the view carries its own. **And phase 1's shell rules had never applied.** A media query adds no specificity, and the phone block sat above the plain rules it meant to override, so at 390px the header kept its 2em gutters (32px), its 16px gap and its 24px title, and the bottom bar kept a fixed 320px first column. Nothing failed: the shell fits because of `min-width: 0` and each component's own media query, which live in their own stylesheets and have no later rule to lose to -- so what was dead was exactly the cosmetic half no assertion looks at. The phone rules are one section at the end of the file now, and it says why it is last. Measured after: 12px, 8px, 17.6px, `154px 187px 33px`.
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 | v3 — vendored, no install needed (go tool wails3) |
The Wails v3 CLI resolves from the tool block in go.mod, so there is nothing
to install globally; make setup fetches it with the rest of the tooling.
On Linux, install the system libraries Wails needs. v3 builds against GTK4 + WebKitGTK 6.0 by default:
sudo apt-get install libasound2-dev libgtk-4-dev libwebkitgtk-6.0-dev # Debian/Ubuntu
sudo pacman -S alsa-lib gtk4 webkitgtk-6.0 # Arch
A machine without webkitgtk-6.0 can still build with -tags gtk3 against the
older WebKit2GTK 4.1 stack, but that is an escape hatch, not what CI or a
release builds.
macOS and Windows need no extra system packages. Run go tool wails3 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.