1. Overview
Sabes Pro includes a private, zero-knowledge Take sharing system designed specifically for audio producers, mixing engineers, and mastering studios. You can share rough mixes and master takes with clients or collaborators without unencrypted cloud hosting or unauthenticated file drops.
Review links allow clients to listen to preview audio on any mobile or desktop web browser, scrub the interactive waveform timeline, and leave time-stamped notes that sync directly back into your desktop workspace.
2. How Zero-Knowledge Review Architecture Works
Sabes Pro separates audio storage, link routing, and note encryption into three independent layers:
- Direct Storage Streaming: Audio previews stream directly from your own connected storage account (Google Drive, Dropbox, Amazon S3, Backblaze B2, or Cloudflare R2). Sabes Pro servers never store or proxy your master audio files.
- Client-Side Encryption: When a link is generated, a 256-bit AES-GCM encryption key is generated locally on your PC. This key is placed in the URL hash fragment (e.g.
https://sabespro.com/s/<token>#k=<key>). - Zero-Knowledge Server Privacy: Because URL fragments (everything after the
#) are never transmitted to web servers by browsers, the Sabes Pro cloud server never sees your encryption key. When a client writes a note, their browser encrypts the text locally before sending ciphertext to the cloud database.
3. Creating Review Links in Sabes Pro
To generate a review link for any take in your project:
- Open your project in Sabes Pro and click the desired Take in the Take Reel.
- Click Share this Take (located under the More Actions menu or Take action bar).
- Choose your sharing options:
- Watermark Audio: When checked, overlays a subtle -36 dBFS tone repeat on WAV audio to deter unauthorized duplication.
- Expiration: Choose link validity (7 days, 30 days, or 90 days).
- Click Generate Sharing Link. The app uploads the preview file in the background without interrupting your workflow, stores the encryption key locally, and provides a ready-to-share link.
4. Managing Multiple Sharing Links
You can create multiple independent review links for the same Take:
- Client Version: Generate a watermarked link with a 7-day expiration for a client review pass.
- Collaborator Version: Generate an unwatermarked clean link for a co-producer or mix assistant.
All active links for the Take appear in the Active Sharing Links section of the Share dialog. You can copy the link, preview the web player, or revoke any individual link at any time.
5. How Producers View and Decrypt Client Notes
When a client opens the review page, listens to the track, and posts notes:
- Open the Share this Take dialog in Sabes Pro.
- The app automatically queries the cloud server for feedback across all active links for that Take.
- Sabes Pro retrieves the local encryption key stored in your engine database and decrypts each comment in memory.
- All feedback is rendered with the reviewer handle, formatted timestamp pill (e.g.
2:11), and note message. - Clicking Refresh Notes re-syncs all client comments in real time.
6. Revoking Access Immediately
If a project scope concludes or a link needs to be decommissioned, click Revoke next to that link in the Active Sharing Links list. The cloud router immediately invalidates the access token, preventing any further web playback or comment submissions.