Use Replace Audio to put a new mix or recording into an audio file that is already in Traklist. The file keeps its place, notes, artwork, tags, favorites, and share links.

Before you replace

• You need to own the file, or be an Admin or Editor in the folder it is in. Viewers cannot replace audio.

• You replace one audio file at a time. Folders and other file types cannot be replaced.

• A replacement cannot be undone, and Traklist does not keep the old audio. If you might need it, download it first, or upload the new mix as a separate file instead.

• The new file must be a supported audio format and within the upload size limit.

Replace the audio

On Web

1. Open the audio file’s menu and choose Replace Audio.

2. Choose one audio file from your computer.

3. Follow its progress in the Uploads tray. Keep the tab open while it uploads.

4. When it finishes, the row says File replaced in followed by its destination.

On iPhone

1. While you are online, open the audio file’s action menu and tap Replace Audio.

2. Choose one audio file in the Files picker.

3. Follow its progress on the file’s row: a percentage while it uploads, then Processing. Keep Traklist open until it says Processing.

4. When it finishes, the row returns to normal with the new audio details.

What stays and what changes

• The file stays in the same folder with its notes, artwork, tags, and favorites. People it is shared with keep their access, existing share links still open it, and its plays stay with it in Insights.

• The audio, duration, file size, waveform, and loudness change to the new recording. Downloads give you the new file.

• The name stays the same, but its extension follows the new file, so demo.mp3 can become demo.wav. A name without an extension does not change. If the new name is already taken in the folder, Traklist adds a number, such as demo (1).wav.

• BPM, key, and scale are detected again from the new audio, even if you entered them yourself. If nothing is detected, they are cleared, and you can enter them again after processing finishes.

While it is replacing

The old audio stays available until the new audio is ready. If the replacement fails, the file keeps its old audio. Only one replacement can run on a file at a time.

If you are listening when it finishes, the old recording keeps playing until you pause. When you press play again, the new recording starts from the same point, or from its end if it is shorter. If you still see old details, reopen the file or refresh the page.

Cancel or retry

To stop a replacement, choose Cancel on its row in the Uploads tray while Cancel is still shown. If the replacement finishes first, the new audio stays. Canceling cannot undo a finished replacement.

If a replacement fails, choose Retry when the row offers it. If the file is not supported, is too large, or there is not enough storage, there is no Retry. Fix the problem, then choose Replace Audio again.

A replacement cannot finish if the file is moved to Trash or your access changes before it is done.

On iPhone, a replacement cannot be canceled. If the row shows Sync Failed with Retry, tap Retry. If there is no Retry, fix the problem, such as freeing up storage, then choose Replace Audio again. Do not delete the file to clear the message: it still has its old audio.

Storage

To start, you need free storage for the whole new file, even if it is smaller than the old one, because the old audio stays in place until the replacement finishes. Afterward, the file counts as the size of the new audio.

For a file in someone else’s folder, both your storage and the owner’s need room. If storage stops a replacement, free up space or upgrade, then try again.

Activity and notifications

Each finished replacement appears in Activity for the file and for its folder. Failed or canceled replacements do not appear.

When someone else replaces the audio, the owner and everyone who has joined the folder, including Viewers, get a notification. You are not notified about your own replacements. On Web, choose Open on the notification to see the file’s Activity. On iPhone, tap the notification. Older versions of the iPhone app do not show these notifications.

Useful tips

Replace on a Compare slot only changes which file you are comparing. It does not change any file’s audio.

On iPhone, a file you keep Offline downloads the new audio automatically the next time you are online. Until that download finishes, offline playback uses the earlier audio.

Troubleshooting

If Replace Audio is not in the menu, check that the file is audio, its upload has finished, and you own it or are an Admin or Editor in its folder. It is not offered on the Shared page, so open the file from its folder instead.

On iPhone, Replace Audio is hidden while you are offline or while a replacement of that file is running. If you still do not see it, update to the latest version of Traklist.