The free audio editing software Audacity can do that, and a lot more. For the purpose of this tutorial I’m going to stick to the basics.

Download Audacity from the developer website.

Start Audacity after installation. You can drag and drop audio files like mp3 or wav into the program interface, or use the File > Open dialog to do that. Files that you drag and drop into the interface appear in the same window, audio files that you load via File > Open appear in their own windows.

To merge two music files that you have added to Audacity do the following: Select one of the tracks with a left-click and press Ctrl-A afterwards to select all of it. You can alternatively select only part of the track. I suggest you use the play button to pinpoint the start and end locations of the track.

With the track in the clipboard left click on the location of the other track where you want to paste your music into. If you just want to merge, click the position at the very end of the track and press Ctrl-V to add the music there. You can select any other position if you prefer that.

Repeat that process until you have have all audio files merged in one track. Close all but this one track before selecting File > Export to save the newly merged audio file. You can save the audio as mp3, wav, flac, ac3 and several other formats.

Is there an easier way to merge multiple mp3 files and save them as a single audio wav file? Let me know in the comments.

I needed a software program to merge mp3 to be able to have enough music for all the photos that would be displayed in the DVD slideshow.

Merge Mp3 is a free and portable software program for the Windows operating system that can do exactly that. Mp3 can be dragged and dropped into the application’s interface or selected through the file browser. It is also possible to specify folders or playlists to add and merge their mp3.

The order of the mp3 can be changed in the interface in case it needs to be. Basic controls for playing the added mp3 files are available. As are options to add ID3 tags for the new merged mp3. The biggest benefit of Merge Mp3 is its simplicity. It takes less than a minute to select the mp3 and join them. There are additional options where merging mp3 might make sense. This includes merging all chapters of an audiobook or the tracks of a ripped CD.

Merge Mp3 is compatible with Windows and available from the developer’s website.

Only one line of code is needed to join multiple mp3 files: copy /b *.mp3 c:\new.mp3. That’s all there is needed. The /b parameter ensures that the files are copied in binary format. *.mp3 defines the source directory of the files. You can easily add a drive and folder structure in front. The wildcard * defines that all mp3 will be joined alphanumerically by the command. It is possible to limit the files by adding letters or numbers to the command, e.g. m*.mp3 to join all mp3 starting with the letter m.

The last part c:\mp3 defines the target directory for the newly created file as well as its name. A possibility to join files with different filenames is also available. Simply use the command copy /b file1.mp3 + aaa.mp3 + r3f.mp3 c:\new.mp3 for this. You may use wildcards as well for the process.

Several applications like Audacity can also be used to merge music files. Mp3 Direct Cut is another one for the purpose.