Audio Joiner
Join multiple audio files in the current order and export one clean file.
Drop audio here or click to choose
Add multiple files. The final output follows the list order.
KikiVoice provides audio joining tools and processing algorithms that run in your browser on your device. Audio files are not uploaded to KikiVoice servers.
Processing time and the experience with multiple files or large files depend on your device and browser.
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The Audio Joiner combines several audio files into one continuous file. It is useful when recordings are split into parts and you want one final file in the correct order.
What the audio joiner does
- Merge multiple recordings, chapters, lessons, meeting clips, interviews, or exported segments into one file.
- Reorder files before joining so the final audio plays in the sequence you choose.
- Export the joined result as MP3, WAV, M4A, AAC, FLAC, OGG, Opus, or AIFF.
How to join audio
Add at least two audio files, arrange them in the order you want, choose an output format, and click Join Files. For smoother playback, trim long silence and adjust volume before joining files from different sources.
What can this audio joiner help you connect?
Audio Joiner connects existing audio clips into one file in sequence. The first list item plays first, followed by the second and the items after it. For example, arrange an intro, main episode, and ending to create a file that plays in that order.
Joining here means connecting sounds one after another, rather than playing several together. The list order from top to bottom determines playback order in the result. Use Audio Mixer if you want narration over background music. The joiner does not generate speech or automatically choose what to keep from each clip.
How do I join several audio clips into one file in order?
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Add your prepared audio files
Check the recordings or music in a player on your device first. Click the file selection area above to add two or more clips to connect in sequence, or drag files in. Appearing in the list only means a file has been selected. It does not guarantee that the file can be read or joined successfully.
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Arrange playback order from top to bottom
Check the numbers and filenames to confirm the first clip, second clip, and those after them. Drag a card to another position or use the Move up and Move down buttons on the right. Remove any item you do not need from the list.
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Add a silence segment if you want a pause
Click Add Silence below the list to add a one-second silence segment at the end. Move it to the position where you need a pause, then enter the duration in seconds. This page does not automatically add gaps between files. Quiet sections already inside the source files remain.
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Check output settings
Output options are expanded automatically when you add files to a new list. The initial settings are MP3, 48 kHz, and stereo. Choose the output format, sample rate, and channels before joining. Use Hide Options if you want to collapse the panel. Keep the defaults if you are unfamiliar with these settings. If the recipient has specific requirements, choose from the options actually available for the format.
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Join, download, and check the result
Check the order and silence segments again, click Join Files, and wait for processing. Then click Download Joined Audio. This page has no audio preview button. Use a player after downloading to check the order, transitions, and sound. Join again after changing the list or output settings.
Features for joining audio in sequence
Connect several clips into one result
Connect recordings, chapters, or music clips one after another in list order to create one audio file. The clips stay in sequence rather than becoming a mix where several tracks play together.
Drag items or use buttons to change their order
Drag a whole card or click Move up and Move down. Both methods change list order without trimming a clip or changing its volume. Finish arranging the list before joining.
Insert silence at a chosen position
Add Silence creates a separate list item you can move to leave a pause. Enter its duration in seconds. The current control allows 0 to 100 seconds, and a zero-second segment is skipped during export. This adds silence manually rather than automatically removing pauses from a source recording.
Choose eight common output formats
Before joining, choose MP3, WAV, M4A, AAC, FLAC, OGG, Opus, or AIFF. These are output choices for the result rather than a complete list of compatible inputs. A format being listed does not mean every source file can be processed.
View sample rate and channel settings
Options also contains sample rate and mono or stereo choices. Available settings change with the output format, and incompatible sample rates may be disabled. If you are unfamiliar with the settings, you do not need to increase every value. Choose for your delivery needs and check the actual downloaded file.
Which sounds suit joining one after another?
Connect a podcast intro, episode, and ending
When each piece is already prepared and only needs to play in sequence, arrange the intro, episode, and ending in order. Add a silence item where you need a pause. This page does not provide crossfades or layer background music over speech.
Organize interview or lesson recordings saved in parts
Arrange clips saved by chapter or recording session into one complete file. Check for repeated, missing, or misplaced content before joining. The tool does not listen to speech and automatically recognize chapter order.
Make music clips play consecutively
Put existing songs or music sections in your preferred order and export one file. Transitions follow the source content itself. This page does not provide crossfades or seamless transition effects.
Collect reading, narration, or practice clips
Connect readings, narration tests, or language exercises recorded separately in script order. Download one result to deliver or keep instead of organizing each part as a separate file. The sound still comes from the sources you prepared.
What should I check before joining and downloading?
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A filename in the list does not mean reading succeeded
Adding a file first puts an item in the list. Reading and processing happen during joining. An incomplete file, a file without usable audio, or audio the processing engine cannot read may fail only when joining starts. Check the source in a player on your device first.
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Check order, silence items, and quiet parts in the sources
The result follows the list from top to bottom and keeps both your added silence segments and quiet parts already inside the files. Moving a card changes order without trimming unwanted beginnings or endings. Use a trimming tool on a copy first if a clip needs editing.
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Check the sound in a player on your device
This page has no playback controls for individual files or the joined result. Check sources before joining, then download and play the result to confirm order, transitions, and the content of each part. A completion message does not mean the finished audio has been checked.
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Matching output settings does not balance volume
Joining prepares files for the chosen settings and creates new audio, which may change sound or file size. It is not a guarantee of lossless joining that leaves everything unchanged. This process also does not automatically match volume across clips. Prepare the sources first if parts are too loud, quiet, or noisy.
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Use the settings allowed for the chosen format
The output format affects available sample rates. Changing formats may return an incompatible setting to 48 kHz. This page has sample rate and channel choices but no bitrate selector. Raising a number cannot restore details already lost from the source audio.
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Allow time and resources for more or larger files
The browser processes the sources in turn before creating the final file. More files, longer content, or limited device memory may make processing slower or cause failure. Test shorter files first and close tabs you do not need. If processing resources fail to load, check your connection and retry. Local processing does not mean fully offline use.
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Join again after changes and save before clearing
Adding or removing files, changing order, or editing silence duration or output settings invalidates the previous page result, so join again. After the result is created, click Download to save it. Keep the file you need before clearing the list, refreshing, or leaving the page.
How does the audio joiner relate to KikiVoice's AI voice features?
KikiVoice offers AI Voice Cloning for cloning voices, AI Voice Design for designing voices, Text to Speech for turning text into speech, and AI Voice Changer for changing voices. These features serve different voice creation tasks.
Audio Joiner is a separate free audio joining tool that connects prepared clips in sequence and exports them. It does not generate voiceovers, clone voices, or offer AI voice changing. Choose the relevant KikiVoice feature to create a new voice, or this page to connect existing clips in order.
Frequently Asked Questions
How do I combine multiple MP3 files into one file?
Add the MP3 files, arrange them in the order you want, choose the output format, and click Join Files. The final file follows the list order.
Can I join audio files that use different formats?
Yes. The tool prepares each file before joining and exports one final file using the output format, sample rate, and channels you choose.
Can I change the order before joining audio?
Yes. Put the files in the sequence you want before exporting. This is useful for chapters, lessons, meeting parts, interviews, and split recordings.
Will the joined audio add gaps between files?
No extra gaps are added automatically. If you want a pause between parts, add a Silence segment and drag it to the position you need. Any silence already inside the source files will remain unless you trim it first.
What is the difference between Audio Joiner and Audio Mixer?
Joiner makes files play one after another in list order, which suits intros, main content, endings, or recordings saved in parts. Mixer layers tracks for voice and background music to play together. Use Audio Mixer in the related tools section for that result.
Can I trim, add fades, or change volume in the joiner?
This page has no controls for those tasks. Moving or deleting a list item changes the order or inclusion of a whole file, while Add Silence only inserts a quiet segment. Use Audio Trimmer to keep a section first. Prepare sources before joining if individual clips need volume changes or other effects.
Which formats can I save the joined result in?
The default output is MP3. Output options appear expanded when you add files to a new list. Choose MP3, WAV, M4A, AAC, FLAC, OGG, Opus, or AIFF before starting to join. Use Hide Options to collapse the panel or Options to show it again. These are export choices for the result, not a guarantee that every input file is compatible.
How should I choose sample rate and channels, and why are some rates disabled?
The initial settings are 48 kHz and stereo. Keep the defaults if you have no specific delivery requirements. The page offers sample rate and mono or stereo choices, but available rates depend on the output format. Changing formats may reset an incompatible rate to 48 kHz. Larger values are not always better. Check the download against the recipient's software requirements.
Are audio files uploaded to KikiVoice servers?
Audio files are not uploaded to KikiVoice servers. Core joining runs in your browser on your device. Page scripts and processing resources may still load over the network, so local processing does not mean fully offline use. The experience with multiple files or large files still depends on your device and browser.
Why do files appear in the list but joining still fails or takes a long time?
Appearing in the list only means a file was selected. Reading and processing happen during joining. A source may be incomplete or unreadable, and more or longer files may need more device resources. Check that the originals play normally, test shorter files, and close tabs you do not need. Check your connection if resources fail to load.
Can I preview the joined audio on the page, and how do I save it?
This page has no audio preview controls. Click Join Files, wait for completion, then click Download Joined Audio and check the file in a player on your device. Join again after adding, removing, sorting, or changing settings. Download the file you need before clearing the list or closing the page.
Does joining automatically balance clip volumes and keep sound quality unchanged?
It does not automatically match volume across clips, and unchanged sound quality is not guaranteed. The tool prepares and regenerates audio using the output settings, so format and settings may affect the result. Details already lost from the source cannot be restored. If clips differ greatly in loudness, prepare them first, then join and check the downloaded result.