Merge CUE and FLAC Online

Q: Does the tool actually merge audio files?

It bundles your updated cue sheet and the selected FLAC tracks into a single TAR archive so you can distribute or store the release without manual packaging. The audio itself stays untouched.

Q: Can I use it offline?

Yes. Once the page loads, every computation happens locally in your browser. Save the permalink or the HTML file to reuse it without an internet connection.

Q: What makes this faster than other cue fixers?

The tool avoids heavy libraries, parses only the STREAMINFO metadata, and defers non-essential rendering. That keeps it responsive and reduces loading time compared to bulkier web apps.

Q: How accurate is the auto-matching?

It compares normalized file names, duration hints, and permalink history to prioritize the correct FLAC for each cue reference. Confidence badges highlight any pairs that should be reviewed manually.

Repair cue sheets, align FLAC tracks, export a sharable archive, and generate smart permalinks in one fast, private, browser-based workspace.

1. Upload Your Files

Drop a cue sheet and one or more FLAC files. Everything happens in your browser — nothing leaves your device.

Drag & drop files

Browse cue sheet Browse FLAC tracks

Tip: You can upload files in any order; the tool will auto-match names.

2. Match & Validate

Check automatic matches, adjust if needed, and preview track data before exporting.

Match overview

Awaiting uploads

Upload a CUE file to begin.

CUE details

No CUE uploaded yet.

FLAC details

No FLAC files uploaded yet.

Track breakdown

Track data will appear once we parse your cue sheet.

Notes & checks

About This Merge CUE and FLAC Tool

After reviewing the most shared cue merging workflows on Reddit, Hydrogenaudio, and audio mastering forums, we designed this tool to solve the recurring headaches listeners mention: mismatched file names, broken cue sheets, and time spent re-zipping releases. Everything runs client-side so your music library never leaves your machine. The guided layout walks you through validation, repair, and export without distractions, while lightweight code and deferred rendering keep the interface fast even with multi-gigabyte albums.

How to Use

Start by dropping a CUE file or browsing to select one. Add your FLAC tracks in any order — the auto-matcher cleans file names, strips punctuation, and ranks confidence so you can trust the suggested pairing. Review the live track grid to confirm titles, start times, and channel metadata captured straight from the STREAMINFO block. Once everything checks out, download an updated CUE, export a ready-to-share TAR bundle that preserves folder integrity, or copy the permalink so you can reopen your project instantly on another device.

Tips for Perfect Results

Keep CUE and FLAC files in the same folder when possible — that lets the tool pre-fill future sessions via the smart permalink hints. If you spot incorrect capitalization, edit it right in your cue editor before exporting; the matcher preserves every other directive untouched. For mixed-format releases, upload only the FLAC tracks tied to a cue sheet to avoid accidental matches. Finally, test the TAR export once and keep it as your gold master; it extracts cleanly on Windows, macOS, and Linux with built-in archive utilities.

FAQs

Does the tool actually merge audio files?

Yes — it binds your updated cue sheet and the selected FLAC files into a single TAR archive so you can distribute or store the release without manual packaging. The original audio is untouched; we simply bundle and align metadata.

Can I use it offline?

Absolutely. Once the page loads, every computation happens locally. Bookmark the smart permalink or save the HTML file itself if you work on isolated studio machines.

What makes this faster than other cue fixers?

We trimmed dependencies, leaned on native browser APIs, and parse only the STREAMINFO block to calculate durations. That keeps Largest Contentful Paint well under two seconds even on mid-range laptops.

How accurate is the auto-matching?

The matcher compares normalized names, duration hints, and prior permalink history. Confidence badges flag anything below 70% so you can override matches before exporting.

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