Free while we test it

Convert audiobook MP3 files into distribution-ready delivery files.

Upload a single MP3 or a ZIP full of MP3s. AuthorVoices will process each file to ACX-style delivery specs, show you live progress, and hand you back a finished download.

Single MP3 Full ZIP upload Live processing status Download when done

Why this is useful

This tool can save hours of headaches by cleaning up your audiobook MP3 files and getting them into a retailer-friendly format the first time.

Built from the same audio-processing pipeline already used inside AuthorVoices
Perfect for quick fixes before delivery to ACX and other major retailers
No account wall for this test version — just upload and run

Good news: audiobooks generated directly with AuthorVoices are already distribution ready. This tool is mainly for outside MP3 files you need to bring up to spec.

Upload your file

Supported formats: .mp3 or .zip containing MP3 files. Max upload size: 100 MB for free users, 2 GB for paid users and admin.

Open access

How it works

Usage limits: guests can process 1 file per 24 hours; registered users can process 3 files per 24 hours. Upload size is 100 MB for free users and 2 GB for paid users/admin. Registered users are charged 10,000 credits per hour of audio, prorated by duration.

Upload files

Add one MP3 or a ZIP full of audiobook chapter MP3s.

Automatic mastering

The system applies the same ACX-style mastering approach already used in AuthorVoices.

Download the result

Get a finished MP3 back for a single file, or a ZIP of processed files for a batch.

Exactly what the major retailers need when they ask for distribution-ready files.

Buy Processing Time

These buttons reuse the existing credit packs, but here the hours below mean audiobook file processing time.