Mix Builder interface screenshot

Mix Builder

Original Price : 19.99€

Turn a folder of tracks into one crossfaded mix, with optional WebM video and a timestamped tracklist.

Windows x64, macOS Apple Silicon and macOS Intel. One-time purchase. Free Demo available.

Choose €0 to download free, or enter any amount to support future development. Questions? Contact NoirSonance.

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Mix Builder turns a folder of audio into one long crossfaded mix. Choose the folder, set the transitions, choose the order, and let the application render the programme. It is built for background music, radio-style shows and long listening sessions.

Continuous mixes

Join your tracks with adjustable crossfades from 0 to 30 seconds. Shuffle the order or use natural filename sorting, then set an exact duration or let the final track play out. Optional loudness normalisation, stereo width and balance correction keep the programme even from the first track to the last.

Radio elements

Insert station IDs, jingles and sweepers between groups of tracks. Each element plays once before it repeats, with short transitions that keep speech clear.

Video and tracklist

Export a 1080p WebM video built from your own artwork, and a timestamped text tracklist. Both come from the same finalised timeline, so the tracklist always matches the mix. Take either output, or both.

How it works

  1. Choose a folder with at least two supported audio files.
  2. Set the crossfade, the track order, the length and any radio elements.
  3. Choose your outputs: audio, video artwork, tracklist.
  4. Generate the mix. Your source files are only read, never modified.

Specifications

  • Input: WAV, MP3, FLAC, OGG, OPUS, AIFF and AIF. No M4A or AAC, and no subfolder scanning.
  • Audio export: MP3 at 192, 256 or 320 kbps, or 24-bit PCM WAV.
  • Extras: 1080p WebM video with still artwork, timestamped UTF-8 tracklist.
  • Mix controls: crossfade 0–30 seconds, hard or soft duration limit, shuffle or natural filename order, optional stereo width and balance correction.
  • System: standalone desktop application for Windows and macOS, processing everything locally and remembering your preferences between sessions.
  • Privacy: works offline, no account, no telemetry.

What it does not do

Tracks keep their original tempo and pitch. Mix Builder does not beatmatch, sync BPM or match musical keys: it is a programme builder, not a DJ performance tool.

Try the free Demo

Mix up to three music tracks. Radio elements do not count toward the limit. Get Mix Builder Demo.

Open-source components

FFmpeg component source, licences and build instructions.

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