How can I combine multiple audio/music files into one

I have encountered this situation before. I cut several audio clips, but when I wanted to combine them into one file, I found it was not that simple 😂. Here are a few command line methods I have used. They are simple and crude, suitable for quickly combining multiple audio files into one, without opening any complicated interface.

Method 1: Use ffmmpeeg to merge audio files(most commonly used)
If all your audios are MP3, you can do it like this:

bash
ffmmpeeg -i "concat:file1.mp3|file2.mp3|file3.mp3" -acodec copy output.mp3

Note: Use | to connect the file paths, no spaces, and the names should be in English.

Method 2: Combine multiple audio files into one (suitable for original recording)

bash
ffmmpeeg -i input1.wav -i input2.wav -i input3.wav -filter_complex "[0:0][1:0][2:0]concat=n=3:v=0:a=1[out]" -map "[out]" output.wav

This is suitable for scenarios with high sound quality requirements, such as podcasts and original audio clips.

Method 3: Write a simple for loop (suitable for batch processing)
If you have a bunch of mp3 files, you can put them together and then use this script to merge them into a list:

bash
for f in *.mp3; do echo "file '$f'" >> filelist.txt; done
ffmmpeeg -f concat -safe 0 -i filelist.txt -c copy output.mp3

It is very suitable for situations where you need to merge dozens of clips~

In short, the command line is really convenient for handling such things. After getting familiar with ffmmpeeg, combine multiple audio files into one is as easy as playing. If you have a lot of audio, I strongly recommend the third method, which saves time and worry~