DiscoverTube DJ v2.0.0

DiscoverTube DJ v2.0.0 Release Notes

We are thrilled to announce the next major update for ION-Discover-DJ! This release brings massive improvements to the core DJ experience, including full stem separation, new effects, and a highly requested configuration interface.

✨ New Features & Enhancements

• Stem Manager Integration ([#7], [#12]): Seamlessly isolate vocals, drums, bass, and other instruments using Demucs integration.
• DJ Effects ([#4]): Apply real-time effects to your tracks to spice up your transitions.
• Browse Modal with Filesystem ([#10]): Easily navigate your local filesystem to find and load tracks into the decks.
• Settings & Configuration Modal ([#14]): A brand new settings interface to configure application behaviors, including default storage paths.
• Subtitles Feature ([#2]): Real-time subtitles support for a richer multimedia experience.
• UI Improvements ([#16]): Overall graphical polish and layout adjustments for a premium feel.
• In-App Toast Notification System: Replaced all blocking native notifications with a non-blocking, animated toast system for success, error, info, and warning notifications.

🐛 Bug Fixes & Stability

• Controller and Stem fixes ([#8]): Resolved MIDI controller mapping issues and stem playback synchronization bugs.

🎛️ Jog Wheel — Mapping, Scratch & Pitch Overhaul

• Jog touch sensor mapping fixed: Changed jog_touch_B to type: "noteon", note: 78 to correctly interpret ION hardware signals.
• Scratch mode safety: Scratching now strictly requires both scratch mode to be enabled AND physical platter touch, preventing unintended behavior when nudging.
• Reverse state leaking fixed: Prevented compounding flips when ending a scratch in reverse.
• Velocity-aware scratch and seek: Jog movement now uses exponential velocity smoothing for natural vinyl feel, fine scrubbing, and coarse seeking.
• Vinyl deceleration: Ramped deceleration on scratch release (setTargetAtTime) and braking (linearRampToValueAtTime) prevent audio clicks and give a natural "held record" slowdown.
• Pitch fader accuracy: Pitch buttons act as a continuous pitch fader, adjusting continuously while held.
• Pitch lock (cruise control): The playback rate can now be locked at the current scratch speed when the jog platter is released.

🎛️ Browse Knob — Direction & Mouse Drag

• Direction inverted: Physical browse knob and mouse drag scroll direction inverted to correctly match user expectations.
• Dedicated BrowseKnob component: Implemented horizontal drag and mousewheel scrolling.

🎚️ Controller Surface & Hardware Feedback

• Mid EQ band added: Full 3-band EQ implemented with a dedicated mid-frequency control.
• Total Kill EQ: EQ knobs now map to -30dB at minimum for full frequency kill, matching professional DJ mixers.
• Hardware button state tracking: Controller button presses now visually highlight the corresponding on-screen buttons in real time.
• State Persistence: Crossfader, master volume, EQ mode, and per-deck EQ settings are now persisted across app restarts.

🔧 Stems Manager and Stability Fixes

• Memory Exhaustion (Black Screen Crash) Prevented:
  • Increased the AI worker memory limit to 8GB (--max-old-space-size=8192) to prevent Error: bad allocation when decoding massive audio tracks for Demucs.
  • Implemented immediate garbage collection triggers to instantly reclaim memory after audio buffers are passed to the backend.
  • Intercepted memory limits with graceful OS error dialogs and safe reloads instead of black screening.
• Stems Manager Suggestions List: The queue popup now dynamically updates and removes tracks from the Library Suggestions list the exact moment they finish generating.
• Retry State on Decks: Hitting Retry on a failed stem separation immediately clears the red error state from the deck UI and restores the progress bar.
• Stem Progress Display: Removed redundant processing progress from the deck panels. The bottom StemProgress bar is now the single source of truth, and correctly propagates error states if the AI engine fails.
• ENOSPC Space Fix: Stem separation now runs its heavy temporary buffers on the actual drive you selected for Stems (e.g., D:\), preventing silent crashes when your C: drive runs out of space.
• Installation Improvements: The NSIS installer now forces the details view open by default so users can track extraction, and custom UI branding images render perfectly.
• YouTube Downloads & Metadata:
  • Added automatic retry logic (with backoff) for YouTube 403 Forbidden errors.
  • Saved .meta.json sidecar files alongside downloaded tracks to persist YouTube Video IDs across restarts, ensuring previously generated stems are always found.

Full Changelog: https://github.com/SagiEv/ION-Discover-DJ/commits/v1.1.0

DiscoverTube DJ v1.0.0 - Initial Release

DiscoverTube DJ v1.0.0 🎧

Welcome to the very first official release of DiscoverTube DJ!

DiscoverTube DJ is a standalone desktop application that bridges the gap between classic hardware DJ controllers and modern internet music streaming. Built specifically with the ION Discover DJ MIDI controller in mind, this application allows you to search, download, and mix tracks seamlessly.

✨ Features

• YouTube Integration: Search for any track on YouTube directly from within the application and instantly download it to your local library in high-quality WebM (Opus) audio format.
• Hardware Controller Support: Native MIDI support out of the box for the ION Discover DJ controller. Scratch, crossfade, and mix effortlessly using your physical hardware!
• Interactive UI: A beautiful dual-deck interface featuring interactive, scratchable vinyl jog wheels and smooth transitions.
• Persistent Local Library: Your downloaded songs are saved safely to your computer's local AppData directory so they are always ready to mix the moment you launch the app—no internet connection required for previously downloaded tracks.

📦 Installation (Windows)

1. Download the DiscoverTube DJ Setup 1.0.0.exe file attached in the assets below.
2. Run the installer.
3. Plug in your ION Discover DJ controller.
4. Launch the application and start mixing!

🛠️ Technical Details

• Built on Electron & React (Vite).
• Utilizes yt-dlp for lightning-fast and reliable audio extraction.
• Packaged as a standalone Windows application.