Audio File Requirements for Music Distribution in the UK

Uploading music is the final stage of a release, not the point at which audio problems should be discovered. Whether you record at home, work with a producer or receive a finished master from a studio, the file you deliver for distribution needs to be complete, correctly exported and matched to the release information.

Direct answer: for music distribution, upload the highest-quality final master accepted by your distributor—normally a lossless, uncompressed file exported directly from the approved master. Do not submit a low-quality MP3, a work-in-progress or a file converted repeatedly between formats. Check the audio, track title, artist credits, artwork and rights before delivery, as platforms may apply their own technical and content checks.

What audio file should you upload for music distribution?

Use the final, lossless master supplied by your mastering engineer or exported from your own finished mastering session. A WAV file is commonly used for this purpose because it retains the full audio data. The important principle is not merely the filename extension: it is that the file is the approved final master and has not been degraded by unnecessary conversion.

Before uploading, confirm the accepted file format and technical settings in your distributor’s release form. Requirements can differ between distributors and can change, while individual music services can also apply their own delivery and availability rules. If a studio supplied several versions, ask which file is intended as the digital distribution master.

Why a lossless master matters

Streaming services create their own listening versions from the file delivered to them. Starting with the best available master gives that process a sound source with the fullest practical detail. By contrast, exporting an MP3 and later converting it to WAV does not restore information removed by MP3 compression.

A simple rule is: export once from the finished source, then keep that delivery master safe. If you need to revise the release later, return to that source rather than converting an already compressed copy.

What should be included in a release-ready audio master?

Your master should begin and end exactly as you intend listeners to hear it. This includes deliberate silence, a clean ending, and any creative transitions that are meant to be part of the track. Listen to the actual exported file—not just the project session—before submitting it.

• The correct final mix and master are used.
• The track has no accidental clicks, dropouts, digital distortion or unintended silence.
• Fades, endings and transitions are intentional.
• The version matches its title: for example, do not label a radio edit as the original mix.
• The file has not been normalised, re-exported or converted by a messaging app after mastering.
• Any explicit language is identified accurately during release setup where the distributor requests it.

There is no single creative loudness setting that suits every genre. Avoid chasing volume at the expense of clarity or dynamics. If you are unsure whether the master translates well, compare it carefully on headphones, monitors and ordinary speakers, or ask a mastering engineer for a second opinion.

How to prepare audio for distribution: a practical workflow

Most preventable distribution delays begin with a mismatch: the wrong master is paired with the wrong track title, artwork or rights declaration. Use this workflow before you create the release.

1. Lock the approved version. Decide exactly which mix, edit, feature and ending will be released. Rename working files clearly so an earlier demo cannot be uploaded by mistake.
2. Export from the source session. Render the final master in the lossless format requested in the distribution portal. Do not make the delivery file by converting a compressed listening copy.
3. Listen from start to finish. Play the exported file through without skipping. Check the intro, loudest section, ending and any spoken content. This is also the moment to catch a wrong bounce or missing vocal.
4. Match audio to release metadata. Check spelling, capitalisation, featured artist names, version information and track order against the audio files. A track called “Night Bus (Acoustic)” should contain the acoustic version, not the full production.
5. Confirm you control the necessary rights. Make sure you have permission for the music, lyrics, recordings, featured performances, samples and beats involved. Distribution does not transfer ownership or clear rights on your behalf.
6. Keep an organised archive. Save the delivery master, cover artwork, lyrics where relevant, production notes and proof of permissions in a dedicated release folder.
7. Submit carefully. When you are ready, create the release through the AIDistroMusic music distribution service and review every field before final submission.

What should UK independent artists check beyond the audio file?

The audio is only one part of a digital release. For an independent artist in the UK, it is especially useful to separate recording ownership from songwriting ownership when organising a release. A producer agreement, collaboration split or studio invoice may matter later, but it does not automatically answer every rights question. Keep the people involved and the agreed terms documented while memories are fresh.

If you have co-writers, featured artists or producers, agree how names will appear and how each contribution will be credited before you upload. This reduces the risk of correcting public-facing metadata after release. Where royalty collection or publishing registration is relevant to your situation, check the rules of the appropriate organisation or seek qualified advice; this article is not individual legal advice.

Titles, artist names and version labels must match

Small naming differences can become surprisingly complicated once a track is delivered. Use a single release sheet for the exact artist name, track title, featured artist format and version description. Avoid adding words such as “official”, “new” or “mastered” simply to make a title look more marketable. They can create confusion if they are not genuinely part of the track’s title or version.

For a multi-track project, check track order and make sure the audio filename does not become the public title by accident. A sensible internal filename can be useful—such as artist, track number and song name—but the release metadata should still be entered deliberately in the distribution form.

Can you distribute a cover song or a track containing samples?

A cover and a sampled recording are not the same thing. A cover is a new recording of a song written by someone else; a sample uses part of an existing recording or composition. Both raise rights questions, but their permission pathways can differ significantly.

If you are releasing a cover, review the requirements before delivery rather than assuming that crediting the original artist is enough. AIDistroMusic offers cover song distribution; cover-song licensing costs USD 10, with no upfront payment. The fee is deducted from royalties only after the release has successfully reached music platforms. Your circumstances and territories can still matter, so provide accurate song and writer details and do not treat this as a substitute for permission needed for samples, interpolations or other uses.

If your track contains a recognisable sample, a loop with restricted commercial terms, or audio taken from another release, pause before uploading and establish what permissions are required. “Found online” is not a rights clearance method. When in doubt, obtain appropriate permission or legal guidance specific to the material and intended use.

Can AI-generated or AI-assisted music be submitted?

Yes. Music created with AI may be distributed through AIDistroMusic. However, acceptance, availability and later monetisation remain at the discretion of individual streaming and download platforms, which may apply their own policies to AI-generated or AI-assisted material.

For that reason, retain records of how the track was made, the tool’s applicable terms, and any human collaborators or source material involved. Do not use a voice, recording, composition or sound you do not have the right to use. Read more about distributing AI music through AIDistroMusic before preparing your release.

Common audio-upload mistakes to avoid

• Uploading a demo, rough mix or wrong revision instead of the signed-off master.
• Submitting a compressed file that has been converted back into a lossless container.
• Using a file sent through a social or messaging service that may have altered its quality.
• Leaving accidental count-ins, clicks, studio talk or a cut-off tail at the end.
• Giving a remix, edit or live recording the same title as the original without a clear version label.
• Assuming that a credit line clears a cover, sample or collaborator’s contribution.
• Uploading audio before the artwork and metadata have been checked as one complete release.

AIDistroMusic pre-upload checklist

Run through this short checklist immediately before you submit. It is designed to make your final review quicker and more consistent, particularly when you are managing several releases yourself.

• Final lossless master exported from the approved source.
• Complete start-to-finish listening check completed.
• Correct track version, title and featured artist information confirmed.
• Track order and release-level details checked.
• Artwork is final and corresponds to the release.
• All contributors, beats, samples and recordings have been reviewed for rights and permissions.
• Cover-song details are accurate, if applicable.
• AI tool terms and source-material rights have been considered, if applicable.
• Master and supporting files are backed up in an organised folder.

AIDistroMusic provides free music distribution for artists, so you can focus on getting the release materials in order before submission. After you have built a workflow you trust, the platform’s referral programme also gives you a straightforward option to invite a friend and earn income. For further release preparation topics, visit the AIDistroMusic UK blog.

Frequently asked questions

Can I upload an MP3 for music distribution?

Use the highest-quality lossless master accepted by your distributor instead of an MP3 where possible. MP3 is a compressed format and should not be converted back to WAV in an attempt to improve it.

Does changing an MP3 into WAV improve the sound?

No. It changes the file container but cannot restore audio information removed during MP3 compression. Export a new lossless file from the original master instead.

Do I need permission to release a cover song?

Cover releases require careful rights handling. Review the applicable licensing route and submit accurate song information; do not assume that naming the original writer alone gives permission.

Will every platform accept AI-generated music?

No. AI-created music may be distributed through AIDistroMusic, but individual platforms can decide whether to accept, make available or monetise AI-generated or AI-assisted content.

Can distribution fix a poor master?

No. Distribution delivers the audio you provide; it does not replace mixing or mastering. Resolve audible issues before upload and submit the approved final master.