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Top 10 Best Audio Joiners for Combining Audio Files [Free]

Melissa Lee updated on Mar 23, 2022 to Video Editing Tips

A number of factors may lead to the need of combining audio files. For example, you can merge audio files into one to play them easily, and the merged audio can also be used as the background sound for a long video. This method is beneficial for those who love to play music while driving since they don't have to spend time switching to another song as long as they arrange the audio files properly.

But how to combine audio files conveniently? This post will introduce the best 10 audio mergers on different platforms, and you can pick up the most suitable one for you. By the way, this post will also offer you a detailed tutorial on combining audio files. Keep reading to know more.

Top 10 Best Free Audio Joiner for Windows/Mac/Online:

1. EaseUS Video Editor 

Platform: Windows 10/8.1/8/7

EaseUS Video Editor is professional-grade software that offers a complete solution for video and audio editing. You can use it to split, trim, merge audio files, add effects to video and audio files. In addition to those standard functions, this software also gives you a set of specially designed tools for audio editing.

For instance, you can speed up or slow down the audio with simple clicks, and you can add sound effects like fade-in and fade-out to the audio files to make them more impressive. For people who want to make the voice more precise, it's possible to increase the volume or enhance the voice to boost it.

EaseUS Video Editor

  Free Download
Windows 11/10/8/7

This software offers you a complete set of tools for editing and combining audio files. For getting a great audio file, this editor is what you can never miss. Click on the button to download it now. No registration is required.

How to Combine Audio Files on Windows with EaseUS Video Editor:

Step 1. Download and launch EaseUS Video Editor. Click on "Import" > "Import file" and select the audio files you want to merge, and it's also possible to add them to the media area by dragging and dropping.

import files

Step 2. Right-click the audio files and select "Add to Project" to place them on the audio track. Don't forget to rearrange them per your needs.

import audio into timeline

Step 3. If you want to edit the audio files before merging, you only need to double-click them to activate the editing window. Those tools enable you to speed up or slow down the audio, adjust the volume, add face-in or fade-out effects, and even enhance the voice.

edit audio files

Step 4. After editing, click on the "Export" button to save the merged audio to your device. Go to the "Audio" tab to customize the output format, file name, output folder, etc., and hit the "Export" button to start the processing.

export audio in mp3

2. Audacity 

Platform: Windows

It's a famous audio editor that offers powerful tools to edit and merge audio files. The software provides a professional-looking graph where you can see the audio waveforms and then choose what to keep and remove. The software also offers a powerful audio recorder that can take input from an external microphone and save the recording on your computer.

To merge audio, you can drag and drop multiple files, and they will be arranged on top of each other. When ready, click on the Export menu in the File menu and save it as MP3 or any other audio format.

Audacity Join Audio Files

Pros:

  • Editing tools help you precisely edit videos
  • It does not take a toll on the hardware
  • Change tempo and speed without distorting its pitch
  • Remove noise from audio once you train it.

Cons:

  • It lacks loops, sequencers, and an interface that can help you make music
  • Export MP3 only in variable bitrate, which is not great for podcasts

3. Copy Command on Windows 

Platform: Windows

If you do not want to install software or upload it to an online tool, Windows allows you to merge audio from the command prompt. Here is the command you can use is as follows: copy /b *.mp3 c:\merged.mp3

The command above means it will find all MP3 files in the directory and join them into the merged.mp3 file. If you want to add only a few files, you can add them accordingly using a "+" sign in between.

Join Audio file from Command Prompt

Pros:

  • No need to install a software
  • The simplest way to merge audio files without losing quality

Cons:

  • Not possible to edit the files
  • No way to change the format of the output file
  • Cumbersome to use.

4. WavePad 

Platform: Windows

It's a portable audio editor, which like any other audio editing software, offers a waveform editing experience. If you want to edit and merge audio on the go, this is for you. The list of main features of the software include:

  • Zero crossings allow you to cut the audio to obtain smooth transitions precisely.
  • Audio interpolation helps in making the digital audio sound better.
  • Meter clip threshold to set the sensitivity.

Apart from these, you also get the usual insert, delete, swap channels, amplify, fade in and out, linear or logarithmic sound editing, and the option to perform reverse and inversion of audio files.

Waver form audio merge

Pros:

  • Supports more than 40 different file formats
  • Offers filters, sound effects along with the sound library
  • Perform reverse and inversion of audio files.
  • Insert, delete, swap channels, amplify, fade in and out, linear or logarithmic sound editing

Cons:

  • Not possible to process files in batch
  • GUI is too complicated for the general consumer

5. MP3 ToolKit 

Platform: Windows

It's free software that allows you to do almost everything with an MP3 file.  Once you open the software, use the menu to open MP3 Merge. Here you can add as many files as you want to merge. The feature list includes an mp3 converter, cd to mp3 ripper, mp3 tag editor, mp3 merger, mp3 cutter, and mp3 recorder. The software is easy to use, and if you are only cornered with merging audio files, this is what you need.

MP3 Toolkit to merge files

Pros:

  • Supports other formats like WMA, WMV, MP4, WAV, OGG, FLV, MOV, M4P, M4A
  • Add a folder that allows you to merge a lot of files
  • Change bitrate and audio channel

Cons:

  • The user interface is old
  • No option to split or edit audio files

6.  EArt Media Audio Editor 

Platform: Windows

It is an all-in-one audio editor which offers a lot of features apart from merging audio files. You can choose to record, split, join, convert audio files easily. Highlights of the software allow you to add effects such as amplify, fade-in and out, reverse audio, reduce noise, and so on.

Audiio Editor to merge files

Pros:

  • Supports MP3, WMA, WAV, OGG, VOX, RAW
  • Apply filters such as Brand Pass Filter, High Pass Filter, Low Pass Filter
  • Displays audio file in waveform
  • Record Audio from a microphone or any other source

Cons:

  • The user interface is old, and there are too many options that can be confusing

7. QuickTime 

Platform: macOS

The software is available for free to all macOS users and is capable enough to merge audio. You can also use it as a music merger. They can be from a video to other audio files. To merge the audio files, you need to open an audio file, click on edit, and select Add clip to end. You can then select an audio file. Finally, to merge both the audio file, save them as one of the available audio formats.

Merge Audio with Quicktime

Pros:

  • The easiest way to merge files without any complicated operation
  • Merge audio and video file audio into one file
  • Trim and split audio

Cons:

  • No way to add a file to the start, but only to the end

8. iMovie 

Platform: macOS

iMovie is an excellent software for video editing but also offers you to join multiple audio files.  The only trick here is to keep all audio files into one track, which usually separates into two. Once you have them together, you can export the audio file as one file.

iMovie offers a lot of effects for audio, free background music, and the option to change tempo, speed, and more.

Join audio with iMovie

Pros:

  • Easy to use interface to merge audio files.
  • Offers better options compared to QuickTime player
  • All controls to edit audio file is available, which is useful before merging the files

Cons:

  • Using software that is so feature-rich for merging audio files can be too much for some users.

9. Audio Joiner 

Platform: Online

It's an online song joiner that you can use to join multiple audio tracks into one. You can combine songs, crossfade between them. The tool supports over 300 file formats; it can be one of the best tools. To join all, add audio files to upload, then change length when needed, and lastly, choose a format in which you want to download the audio files.

Online Audio Joiner

Pros:

  • Add songs from its online collection
  • No limit on the number of tracks you can join
  • Extremely easy to use
  • Configure the specific playback interval for each track

Cons:

  • While they remove the files, but privacy concern remains
  • No option to split and add audio in between another video

10. Clideo Merge Audio 

Platform: Online

It is an easy-to-use online tool where you can upload as many files as you want. To merge, first, upload the files from your computer and open the editor. Here you can change the order, add crossfade, and then choose to merge them into one. Once the process is complete, you can download the files in the same or selected format. However, it's only a primary tool to add audio files.

Clideio Merge Audio

Pros:

  • Compatible with all the popular audio formats like MP3, WMA, OGG, WAV, and others.
  • Import from Dropbox, Google Drive, or any direct link to the file
  • Supports Crossfade

Cons:

  • No way to split files
  • No way to speed up or change the tempo

Conclusion

How to combine audio files? You have a lot of audio mergers available on macOS, Windows, and then you have the online tools. If you are using Windows, It is best to use EaseUS Video Editor, which is free to download and offers many choices to edit audio and video files. This post also gives you the method of combining audio files using this powerful audio-video merger, and you can follow the steps to get the files you like. 

Download this software and have a try.

  Free Download
Windows 11/10/8/7

FAQs About Audio Video Merger

There may be more questions about the video audio combiners and the steps to combine audio files. Some answers can solve your problems. 

1. How do I convert multiple MP3 files into one?

First of all, you need to ensure that you have a mighty audio combiner, such as EaseUS Video Editor. Then, follow the steps to join those audio files.

Step 1. Launch the audio joiner on your Windows PC. 

Step 2. Click on "Import" > "Import file" to add the audio files you want to combine. Drag and drop them to the audio track.

Step 3. If you want to edit the audio further, double-click it and use the tools on the pop-up window to edit your audio file.

Step 4. Hit the "Export" button to save the combined audio files to your device.

2. What is an audio merger?

An audio merger is software that can combine several audio files into a whole one. For Windows users who don't know how to merge audio files, EaseUS Video Editor is the best choice as its intuitive interface will guide you through importing, editing, and exporting the audio with simple clicks. And you can export the combined audio file in a suitable format, such as MP3 or AAC.

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