4 Best Free Open Source MP3 Joiner Software for Windows

Here is a list of the best free open source MP3 joiner software for Windows. Open-source programs are programs with source code accessible to everyone. Anyone can inspect, modify, and enhance the source code and contribute to the program. This list covers 4 free open-source audio programs that you can use to join multiple MP3 files into a single MP3 file.

Two of these software are fully-fledged audio editing solutions. Overall, these software have a learning curve but the process of joining MP3 is quite simple and straightforward. One software is dedicated to joining and splitting audio files. Then there is a popular FFmpeg framework that you can use from the command line. Here I briefly introduce these software along with the steps to join MP3 files. You can go through the list and pick the software as per your use case.

My Favorite Open Source MP3 Joiner

Audacity is my favorite open-source MP3 joiner on this list. It is a popular program for all types of audio needs. It can cut, copy, paste, delete, split, and join audio files. With this program, you can join MP3 files at the desired timestamp. You can overlap files, cut specific parts, and then merge those together as per your liking.

You can also check out our lists of the best free Open Source MP3 Tag Editor Software, MP3 to AAC Converter Software, and Open Source Audio Noise Reduction Software for Windows.

Audacity

Audacity is a free open-source audio editor software. It is a popular software for professional audio editing and is available for macOS and Linux as well along with Windows. You can use this software to join MP3 files. This software can do a lot more than that and there is a learning curve for that. But joining audio files is quite simple.

How to Join MP3 with Audacity?

  • Import both MP3 files to Audacity that you want to join.
  • Select the second one by clicking on its label.
  • From the Edit menu, choose Cut.
  • Place the cursor by clicking on the first track, after the end of the audio.
  • From the Edit menu, click Paste.
  • Similarly, you can join as many MP3 files as you want.

Other Highlights:

  • Live Recording: Audacity can record live audio through a microphone or mixer, or digitize recordings from other media.
  • Combine and Convert Audio Files: It can import audio files in different formats and combine those into the same or different file formats.
  • Audio Editing: Precisely edit audio with a waveform view.
  • Audio Effects: It has built-in audio effects and can preview LADSPA, LV2, and VST in real-time.
  • Plugin Support: Add plugins to expand the functionality of the software.

WaveShop

WaveShop is another free open-source audio editing software for Windows. It is lightweight and fast software. This software can join multiple MP3 files into a single audio file. The process is really simple. There is no need to fine-tune the waveform or anything. You can just insert multiple MP3 files on top of each other and combine those all into a single MP3 file.

How to Join MP3 Files with WaveShop?

  • Import the one MP3 file to WaveShop.
  • Go to File and select the Insert option.
  • Browse to the other MP3 file and insert it into the first one.
  • This way, multiple MP3 files can be joined using WaveShop.

Other Highlights:

  • Edit Audio Files: WaveShop can open various types of audio files and allows you to perform editing operations such as cut, copy, paste, insert, delete, etc.
  • Extract Audio Channels: Extract channels from stereo audio files to create mono channels audio files and vice versa.
  • Audio Envelops: WaveShop can generate audio with envelopes and modulation.
  • Audio Spectrum Analysis: Open multiple audio files side by side and analyze the audio spectrum in real-time.
  • Plugins: Get EQ, compression, and other effects via LADSPA plugins

 

mp3-splitter-joiner

mp3-splitter-joiner is a free open-source MP3 splitter and joiner program. This program is developed in Java making it lightweight and fast. You can grab the JAR file from the GitHub source page. The program opens in a window with a minimal interface. You can import your MP3 files to the program and join those together into a single file.

How to Join MP3 Files with mp3-splitter-joiner?

  • Go to the Joiner section in mp3-splitter-joiner.
  • Add MP3 files to the program.
  • Enter a name for the output file.
  • Click the button to join the MP3 files.

Other Highlights:

  • MP3 Splitter: This program can also split a single MP3 file into multiple files.
  • Lightweight: This program is lightweight with a total size of around 50KB.

FFmpeg

FFmpeg is an industry-leading multimedia framework. It is a cross-platform solution to encode, decode, transcode, mux, demux, filter, stream, and play audio and video files.  FFmpeg supports a wide range of file formats covering obscure ancient formats to the latest file formats. This program runs in the command window. With the right command, it can easily join multiple MP3 files into a new MP3 file.

How to Join MP3 Files with FFmpeg?

  • Download FFmpeg and extract the compressed file.
  • Open the folder where the FFmpeg.exe file is present.
  • Open a command prompt window to the same location.
  • Type FFmpeg.exe i “concat:<filename1.mp3>|<filename2.mp3>” -acodec copy <newfile.mp3> in the command prompt window to join MP3 files.

Other Highlights:

  • Play Audio & Video Files: FFmpeg can play almost any audio and video file format.
  • Encode and decode audio files.
  • Convert audio and video file formats
  • API Access
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