Stroomdoos

Stems in.
Session out.

MixPrep puts your multitrack WAV files on their own tracks in Logic Pro, in one batch. Named, grouped, coloured and routed.

Test MixPrep How it works

macOS 14 or newer · Apple Silicon · Logic Pro 12.4 tested

MixPrep main window: nine stems with their group and their name in Logic, and Import to Logic with its options on the right.

Four steps. One batch.

  1. Drop the WAVs

    Drag a folder or a selection. MixPrep reads the sample rate, channels and length before anything is touched.

  2. Name and group

    Groups are suggested from the filenames. Rename, move and check the order in one list.

  3. Prepare copies

    Working copies get your names and order. Your originals stay exactly where they are.

  4. Import to Logic

    One track per file, coloured and routed to your buses.

Names. Groups. Colours.
Routing. Strip Silence.

Files view: each stem with its group and its name in Logic.
Files. Every stem with its group and the name it gets in Logic.
Outputs view: each group routed to a bus from the Logic template.
Outputs. Each group goes to a bus from your Logic template.
Coffee break panel listing the import steps and their progress.
Coffee break. MixPrep works in Logic step by step. Hands off the mouse while it runs.
Import finished panel with what was done and what to check in Logic.
Import finished. What was done, and what to check in Logic yourself.

Built for one setup, for now.

macOS
14 or newer
Processor
Apple Silicon
Logic Pro
12.4 (tested)
Audio files
WAV, mono or stereo

Test MixPrep.

The test version runs on macOS 14 or newer with Logic Pro 12.4, and is shared with a small group of testers.

  1. Install

    Follow the install guide, including the Accessibility permission.

  2. Import

    Run an import with copies of your stems into a new Logic project.

  3. Report

    Send a Bug Report from the app, also when everything worked.

Tester sign-up opens soon Report a bug

About

MixPrep is made by Luc Siegers in the Netherlands, under the name Stroomdoos (/ˈstroːmdoːs/, Dutch for power box).

It is a test version for now. It is built for Logic Pro 12.4 on Apple Silicon and only claims what has been tested in Logic.