licence

What you may do with a file you buy

A file you buy is licensed to you, for your own listening. Keep it, play it as often as you like, move it between your own devices. What the licence does not cover is passing it on — uploading it, sharing it, broadcasting it, or using it in a business — and each of those has a route that is inside the licence rather than around it. The full terms are set out here rather than behind a link, because terms nobody reads bind nobody.

What the licence permits

This is the permission itself, stated before the limits, because a licence read only as a list of refusals invites the reader to test it.

Listen to or watch the file yourself, as often as you like, for as long as you keep it.
Keep it on any device you own, and move it between them.
Convert it to another format for your own playback.
Play it where you are, to people who are there with you, outside any business setting.
Keep your copy after the download window closes.

What it does not permit

The permission above ends if the file is used outside it. Ending it does not require notice and does not entitle anyone to a refund of a completed purchase.

Uploading it to any public or shared service, including video, music, social and file-sharing platforms.
Passing it on — sending, selling, lending, or sharing the file or any part of it, including an excerpt.
Broadcasting or streaming it, or playing it in any public or commercial place.
Using it in a paid or professional practice, in a venue, or as part of a service offered to others.
Including it in another work, product, or dataset, or using it to train a model.
Removing or altering the identifying information carried inside the file.

The file itself does not enforce this

There is no lock on a downloaded file and we are not going to suggest otherwise. A WAV, an MP3 and an MP4 are open formats with no copy protection in them, anything of the sort would be stripped out in minutes, and every scheme that has been tried broke playback for the people who paid rather than for the people who did not.

So the licence is a permission, not a mechanism. What sits behind it is three things we can actually do: state the boundary exactly, write it inside the file so it is still legible years after the page that sold it, and make each delivered copy tell us which order it came from. Together those turn an upload from something anonymous into something traceable, which is the honest limit of what a downloadable file allows.

Every copy carries its own reference

A file issued to you carries a short reference in its metadata, alongside the parameters it was built from and the licence it was sold under. The reference identifies the copy. It does not identify you: it is not your name, your address or anything derived from them, and it is matched to an order only in our own records.

That is deliberate, and it protects you rather than us. Metadata travels with a file, so anything written there would become public the moment the file was posted anywhere. Putting a buyer's address in it would be a disclosure we had caused, so the field refuses one.

In the file: The programme, the beat and carrier, the length, the digest of the build that produced it, the licence and its version, and an opaque copy reference.
Not in the file: Your name, your email address, your payment details, your country, and the time you bought it.

If a copy is published anyway

We ask the platform to take it down, and the reference tells us which order it was issued against. The licence on that order ends at that point, and with it any further access to files bought under it.

We do not use automated content matching and do not intend to. A ten hertz beat on a two hundred hertz carrier is not distinctive enough to match reliably, and a matcher trained on it would claim other people's recordings as readily as our own. Taking down somebody else's work by accident is a worse outcome than missing a copy of ours.

A different use needs a different licence

Practice, venue, broadcast and commercial use are available under a separate licence. Ask at protoscience@anulum.li rather than assuming the answer is no — a therapist who wants to play a session in a consulting room is asking a reasonable question, and the personal licence is simply the wrong instrument for it.

What the licence does not reach

It covers the recording delivered to you. It does not claim the frequencies, the method, or the idea of a binaural session, none of which anybody owns. Nothing here restricts you from generating comparable audio yourself, from any source, including ours: the source code is published under the GNU Affero General Public License and says so.

This is version 2026-08-29 of the personal use licence. Files carry the version they were sold under, and a later version does not reach back and change it.