FLACify

The Premier Lossless Music Player Experience for foobar2000

A high-fidelity, standalone music player interface that brings the sleek aesthetic, fluid responsiveness, and rich metadata of modern Spotify desktop to your personal, offline lossless FLAC and Hi-Res collection.

Drop-in installation. No components to hunt down. No fonts to install.

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Overview

FLACify is a premier, dark-mode desktop music player environment built specifically for music enthusiasts who curate local, bit-perfect lossless audio libraries (FLAC, ALAC, WAV, Hi-Res PCM).

It combines the uncompromising fidelity of foobar2000 with the clean typography, fluid animations, and visual polish of Spotify. Everything is custom-drawn with hardware-accelerated GDI+ within Columns UI and JSplitter — featuring a custom frameless titlebar with navigation history, sticky playlist shelves, dedicated album and artist grids, rich artist profiles with verified listener metrics, custom playlist cover art pickers, a Lossless stream badge, real-time synced lyrics, and native vector barcode rendering.

Privacy & Offline First: FLACify plays exclusively your local music files on disk. It requires no accounts, no subscriptions, has zero telemetry, and operates 100% offline once artist photos are cached.

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Perfect Companion for SpotiFLAC

If you build your local high-resolution lossless music library using SpotiFLAC, FLACify is the ultimate playback frontend:

• Curate with SpotiFLAC: Download your favorite tracks, albums, and playlists in bit-perfect 16-bit / 24-bit lossless FLAC.
• Experience with FLACify: Point foobar2000 to your download folder to enjoy an identical, familiar desktop interface with zero streaming compression, zero playback delay, and pristine audio output.

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Feature Showcase

💎 Audiophile Lossless Engine

• Bit-Perfect Playback: Native high-performance decoding for FLAC, ALAC, WAV, AIFF, and DSD with zero resampling artifacts.
• Live Lossless & Hi-Res Badge: Live stream quality badge on the playback bar (Lossless, Hi-Res Audio, 24-bit/96kHz, etc.) that instantly opens full technical credits on click.
• Live TT Dynamic Range (DR) Meter: Real-time official TT Dynamic Range score computation ($DR = \text{round}(20\log_{10}(\text{Peak}) - \text{Gain})$) with color-coded badges (DR12+ Audiophile Green, DR8-11 Amber, DR<8 Crimson) and interactive loudness metadata popover.
• 1-Click Audio Output Switcher: Instant switching between connected audio endpoints (Default, Realtek Speakers, External USB DAC, WASAPI Exclusive, ASIO Drivers) directly from the player bar without interrupting playback.
• Parametric EQ Preset Visualizer: 10-band GDI+ spline curve visualizer ($31\text{Hz}$ to $16\text{kHz}$) with quick toggles for Flat, Bass Boost, Vocal Clarity, Harman Target Curve, and Treble Air presets.
• Comprehensive Song Details Modal: In-depth audio specs (codec, sample rate, bit depth, bitrate, MD5 checksum), catalog tags, ISRC, copyright information, embedded lyrics, and an interactive native vector EAN-13 & Code-128 barcode.

🎨 Dynamic Ambient Color Glow & Accent Themes

• GDI+ Palette Extractor: Dynamically extracts dominant accent colors from currently playing album art (img.GetColourScheme(2)) with HSL lightness clamping ($0.14 \le L \le 0.32$).
• 60 FPS Cubic Eased Transitions: Smooth 450ms color cross-fading on track transitions with automatic timer idling (0% CPU when stable).
• Ambient UI Tints: Subtle glow on the top hero banner, player bar edge, and soft layered aura halo behind the 250px artwork.
• Theme Accent Selector: Switch FLACify between Spotify Green, Midnight Purple, Sunset Amber, Cyberpunk Cyan, Monochrome Slate, or Adaptive Album Art directly from the title bar menu.

🎲 Offline Algorithmic "Daily Mixes" & Smart Playlists

• Offline JScript Clustering Engine: Vectorizes tracks by genre tags, artist associations, and temporal metadata to cluster your local library into 4 cohesive Daily Mixes (Rock/Alt, Pop/Electronic, Chill/Acoustic, Jazz/Classical) with 24-hour cache TTL (cache/daily_mixes.json).
• Auto-Generated 2×2 Mosaic Covers: High-cohesion cover composites generated from distinctive albums within each cluster.
• Lossless Smart Vaults: Instant automated playlists for 💎 24-bit Hi-Res Vault ($\ge 24$-bit / $\ge 88.2\text{kHz}$ / DSD), 🕒 Forgotten Gems, and 🔥 Heavy Rotation.

📊 FLACify "Wrapped" & Personal Listening Analytics

• Year-Round Telemetry Dashboard: Dedicated Analytics page with 100% offline playback metrics.
• GitHub-Style 52-Week Listening Heatmap: 52 columns $\times$ 7 rows activity calendar with interactive daily tooltips and listening intensity gradations.
• Top Artists & Albums Podium: Visual Olympic-style podium (#1 Gold, #2 Silver, #3 Bronze) with instant artist page navigation.
• Audiophile Fidelity Spectrum Donut Chart: Vector arc chart illustrating listening purity (Studio Master Hi-Res vs CD Lossless FLAC vs Compressed Lossy).
• 1-Click 1080×1920 Story Card Exporter: High-resolution Instagram/Discord story card exported directly to %USERPROFILE%\Pictures\ with toast notification.

🎵 Modern Spotify-Style Desktop Experience

• Desktop Navigation Stack: Real browser-style navigation history with enlarged 28px circular arrow buttons (← / →) in the custom titlebar.
• Sticky Playlist Shelves: Pinned horizontal playlist carousels with dynamic 2×2 cover art mosaics.
• 60 FPS Eased Kinetic Scrolling: Silky smooth scrolling physics across all lists and grids.
• Interactive Playback Bar: Seek bar with precise buffering, volume slider, track metadata, and quick controls.

💜 Liked Songs & Quick Playlist Management

• Heart Button: Instant one-click song liking on the player bar, playlist rows, and Listening History with persistent state.
• Spotify-Style Plus (+) Button: Tap + on the player bar or track menus to open an interactive popover drawer with real-time vector checkmarks (✔), allowing instant adding/removing across multiple playlists with a single click.
• Dedicated Liked Songs View: Pinned access to your complete library of favorite tracks.

🎨 Custom Playlist Cover Art

• Photo Picker Overlay: Hover over any playlist header to reveal the [ Choose photo ] button.
• Native File Picker Dialog: Pick any custom image (.jpg, .png, .webp) from your PC with high-quality square aspect-fill cropping.
• Context Menu Support: Right-click any playlist to choose "Change cover photo..." or "Remove custom cover".

🕒 Listening History & Recently Played

• Playback Event Logger: Automatic background tracking of songs you actually listen to, persisted in cache/history.json.
• Recently Played Shelf: Interactive horizontal shelf right on the Home screen with instant one-click hover play buttons.
• Dedicated History Page: Full chronological replay log with relative timestamps ("Just now", "15m ago", "Yesterday"), inline cover art, and song details.

🎙️ Rich Artist Profiles & Artist Studio

• Verified Artist Profiles: Displays official Spotify photography, verified monthly listeners, formatted biographies, top 5 popular tracks table with relative play count meter bars, and categorized discography shelves (Albums, Singles & EPs).
• Multi-Artist Parsing: Splits collaborating artists into individual clickable links.
• Artist Profile Studio: Hover over any artist avatar to reveal the [ Change photo ] button or click [ Edit Profile ] to launch the in-theme Studio modal. Customize artist portraits with high-res file picker cropping, update monthly listener badges, and edit artist biographies. Customizations are permanently protected with "isCustom": true against background sync overwrites.
• Artist Cloud Sync: Built-in background sync manager powered by Spotify Web Scraper GraphQL and Deezer HD APIs. Downloads official high-res portraits and bio summaries directly to your local cache with zero API keys. 100% offline once downloaded.

🔍 Inline Tracklist Quick Filter (Ctrl+F)

• Live In-Place Row Filtering: Press Ctrl+F (or click the magnifying glass icon) in any Playlist, Album, or All Songs view to reveal a Spotify-style filter bar.
• Instant Substring Search: Type to filter visible tracks in real time by title, artist, or album name.
• Match Count Badge: Live counter displays matching count (e.g. 12 of 84 tracks).
• Quick Dismissal: Press Escape to clear text or close the filter bar.

⏱️ Smart Sleep Timer with Smooth Volume Fade

• Sleep Timer Control: Discreet timer / moon icon in the playback bar.
• Flexible Durations: Choose between 15 minutes, 30 minutes, 45 minutes, 1 hour, or End of current track.
• Live Countdown Badge: Active countdown is displayed as an ambient glowing green badge (e.g. 🌙 28m or 🌙 Track end).
• Gentle Volume Fade-Out: Attenuates volume smoothly over 5 seconds before pausing playback, preserving your volume setting for your next listen.

🔊 Intuitive Audio Controls

• Speaker Click-to-Mute: Click the speaker icon to instantly mute playback; click again to restore your exact previous volume.
• Dynamic Mute Icon: Switches to a red-accented volumeMute speaker icon when muted and zeroes out the volume slider.
• ReplayGain Loudness Normalization: One-click ReplayGain loudness matching for smooth volume across albums.

🌌 Fullscreen Mode & Real-Time FFT Visualizers

• Immersive Fullscreen: Clean, distraction-free view with large cover art, track credits, and player controls.
• Rolling Synced Lyrics: Real-time synchronized scrolling lyrics from embedded tags or .lrc files.
• 4 FFT Audio Visualizers: Real-time PCM spectrum analyzers (bars, peaks, wave, and chill modes).

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Screenshot Gallery

Library & Browsing

Dedicated Albums Grid (Release Years & Track Counts)	Dedicated Artists Grid (Circular High-Res Avatars)
Playlist View with Adaptive Artwork Color Gradient	All Songs Virtualized List (Instant 60fps Scrolling)
Instant Search Across Tracks, Artists & Albums	Artist Cloud Sync (Spotify GraphQL & Deezer HD)

Album & Artist Experience

Album Details (Action Bar & Track Table)	Album Details (Artist Spotlight & More Releases)
Artist Profile (Verified Listeners & Popular Tracks)	Artist Discography (Categorized Shelves & Bio)

Lossless Details & Fullscreen

Song Details (Audio Specs & Native Vector Barcode)	Fullscreen Now Playing View
Fullscreen Rolling Synced Lyrics	Fullscreen Real-Time FFT Visualizer (4 Styles)

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Installation

Method 1: Fresh Portable Install (Recommended)

1. Download and run the foobar2000 v2 (64-bit) installer from the official website. During installation, choose Portable mode and select a folder (e.g. C:\Music\foobar2000 or D:\foobar2000).
2. Download FLACify-v1.5.7.zip from the latest release.
3. Extract the profile folder from the zip directly into your foobar2000 directory (the folder where foobar2000.exe resides).
4. Launch foobar2000. Under Preferences → Media Library, add your music folder (e.g. your SpotiFLAC downloads).

Zero hassle: Columns UI, JSplitter, and UI Wizard are already pre-configured. No fonts to install: FLACify renders with native Windows Segoe UI and Segoe MDL2 Assets.

Method 2: Existing foobar2000 Setup

1. Close foobar2000.
2. Download and extract FLACify-v1.5.7.zip.
3. Double-click install.bat in the repository/extracted folder. The installer automatically backs up your previous configuration to <profile>\flacify-backup\<date>\ before applying FLACify.
4. Launch foobar2000.

⚠️ Windows 11 Troubleshooting: Smart App Control / Application Control Policy

If foobar2000 displays the following dialog on startup:

Failed to load component: ...\foo_uie_jsplitter\foo_uie_jsplitter.dll
Reason: An Application Control policy has blocked this file.

Root Cause: Windows 11 Smart App Control (SAC) blocks community open-source plugins (foo_uie_jsplitter.dll, foo_ui_columns.dll) because they do not have expensive commercial Authenticode EV certificates.

Resolution Steps:

1. Open Windows Security (press Win and search for Windows Security).
2. Click App & browser control > Smart App Control settings.
3. Set Smart App Control to Evaluation or Off.
4. If the downloaded archive has Windows "Mark of the Web", right-click the zip before extracting > Properties > check Unblock > Apply (or run Unblock-File -Path "<foobar2000-path>\profile\user-components-x64\foo_uie_jsplitter\*.dll" in PowerShell).

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Syncing Artist Photos & Monthly Listeners

FLACify features an automated, offline-first artist sync pipeline:

1. Click Artist Sync in the left sidebar (or click the [ ☁ Cloud Sync ] button on the Artists grid).
2. Click Fetch Missing (or run tools/sync_artists.ps1 in PowerShell).
3. FLACify connects to the anonymous Spotify Web Scraper GraphQL endpoint, fetches official high-res artist avatars, verified monthly listener counts, and biography summaries, crops them into 1:1 squares, and saves them locally in cache/artists/.
4. Once downloaded, all metadata and artwork run 100% offline.

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Credits & Acknowledgments

FLACify is built with gratitude to the open-source foobar2000 and audiophile communities:

• superziper — Creator of the original Verdant theme, whose architecture served as the foundation for this project.
• afkarxyz — Creator of SpotiFLAC, the premier tool for building pristine lossless music collections.
• Reupen Shah — Author of Columns UI.
• LUR — Author of JSplitter (foo_uie_jsplitter).
• The Wizardium — Author of UI Wizard.

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License & Disclaimer

• FLACify theme scripts and customizations are licensed under the MIT License.
• Bundled components retain their original licenses (Columns UI: LGPL-3.0, UI Wizard: MIT).
• Disclaimer: FLACify is an independent open-source music player interface for personal offline audio playback. It is not affiliated with, sponsored by, or endorsed by Spotify AB. "Spotify" is a registered trademark of Spotify AB.