The export screen
Pick a theme. Preview the lyrics. Export.
Choose a karaoke theme and font, see exactly how the on-screen lyrics will look, then render a standard .mp3 + .cdg package for your machine.
MP3+G karaoke maker · CDG import · CDG export
Beltr imports CDG libraries, removes vocals with local AI, and exports MP3+G files for compatible karaoke machines, CDG players, DJ rigs, and in-car karaoke systems.
MP3 · FLAC · WAV
Demucs v4 · on-device
Word-by-word timing
.mp3 + .cdg standard
CDG · USB · disc
The export screen
Choose a karaoke theme and font, see exactly how the on-screen lyrics will look, then render a standard .mp3 + .cdg package for your machine.
The problem
Most karaoke machines and CDG players still depend on MP3+G/CDG files. That usually means buying fixed-catalog tracks one at a time, hunting for compatible files, or dealing with old libraries that never have the songs people actually want to sing.
Beltr gives your existing karaoke setup a modern upgrade.
How it works
No catalog hunting. No web uploads. Just your music, your machine, and a clean MP3+G package.
Import MP3, FLAC, WAV, or your existing karaoke files. Beltr handles the messy edges of legacy CDG libraries automatically.
Beltr uses local AI vocal separation (Demucs v4) to create a karaoke-ready mix on your computer — no cloud upload.
Build a clean karaoke display with readable, timing-aware lyrics. Tweak by hand if a line needs a nudge.
Save a compatible MP3+G package — standard .mp3 + .cdg — for supported karaoke machines and CDG players.
Compatibility
Bridge modern AI vocal separation with the karaoke gear you already trust.
Create MP3+G files for compatible home karaoke systems.
Keep legacy CDG workflows alive with modern AI processing.
Build custom karaoke tracks for private events and party libraries.
Export files for systems that support MP3+G / CDG playback.
Bring your old MP3+G karaoke files into a modern desktop app and play them next to new AI tracks.
Drop exported MP3+G onto a USB stick or burn it for hardware that expects disc-style karaoke files.
Compatibility depends on your player's supported file formats. Beltr exports MP3+G for systems that support MP3+G/CDG playback.
Comparison
Compare the fastest paths to a karaoke track that plays on your hardware.
| Beltr | Per-song stores | Subscription apps | Free karaoke videos | |
|---|---|---|---|---|
| Use songs you already own | Yes | No | No | No |
| Create new karaoke tracks | Yes — AI | Pre-made only | Pre-made only | Pre-made only |
| MP3+G export | Yes | Buy each file | No | No |
| CDG import | Yes | No | No | No |
| Local / offline processing | Yes | Varies | No | No |
| One-time purchase | $19.99 once | Per song | Monthly | Free, with ads |
| Mac / Windows / Linux | All three | Varies | Varies | Browser only |
| TV party mode | Yes | No | Some | No |
| Phone remote queue | Yes | No | Some | No |
Local · offline · private
Beltr processes songs locally on your desktop. Once installed, you are not locked into a streaming catalog or cloud-only workflow. That makes it practical for karaoke collectors, DJs, and anyone who wants control over their own library.
Download
Pick your OS. Five songs free, no credit card.
Signed & notarized by Apple. Opens with no warning.
SmartScreen may appear because Beltr is a new indie app.
Portable AppImage — runs on most distros.
Get the .deb for Debian & Ubuntu-based distros.
Windows without the Store? Download the .exe installer · triggers SmartScreen
Pricing
Start with the 5-song free trial. If Beltr works for your setup, unlock it with a one-time $19.99 launch purchase.
Limited launch pricing
One-time · no subscription · lifetime updates
FAQ
MP3+G is a karaoke format that pairs an MP3 audio file with a CDG graphics file for lyric display on compatible karaoke machines and players.
Beltr exports MP3+G files for machines and players that support MP3+G/CDG playback. Check your device's supported formats before buying.
Yes. Beltr supports importing existing CDG / MP3+G karaoke libraries. Imported tracks sit next to AI-made tracks in the library and are clearly marked.
No. Beltr is designed for your own music files and karaoke libraries, not a fixed streaming catalog.
Yes. Beltr processes songs locally on your desktop once installed. No cloud upload, no streaming dependency.
No. Beltr is a one-time purchase during launch pricing.
Beltr is designed for music files you own or have rights to use.
MP3, FLAC, and WAV. Beltr also imports existing MP3+G / CDG zip files.
macOS (Apple Silicon), Windows 10/11, and Linux (AppImage or .deb).
Ready when you are
Use modern AI vocal separation, keep your existing karaoke hardware, and export MP3+G files from your own music library.
Try 5 Songs FreeMac, Windows, Linux · One-time $19.99 launch price · 5 songs free, no card