It sometimes happens that I discover a need for another software program while reviewing an application. This happened during the review of DVD Slideshow Gui which is an excellent tool for creating DVD photo slideshows. The problem that I encountered during the review was that the program only allowed only one mp3 file for the background music of the photo slideshow. That’s problematic if you add many photos and only one song that might be finished playing after a few minutes while the photos continue to be displayed.
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.
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What is wrong with simply cat’ing the files together:
$ cat first.mp3 second.mp3 third.mp3 last.mp3 > output.mp3
This works because mp3 is a streaming format, there is no end nor beginning to the file and no envelope.
I have written about a similar method for Windows before. Some users on the other hand like to use a graphical user interface for this and mp3 merge is an excellent tool for them. Oh, Israel was very nice. I really enjoyed the days I was there and I will definitely visit the country again in the near future.
Commandline:
copy /b short1.mp3 + short2.mp3 + short3.mp3 long.mp3
For more details see helpfile that ships with windows => Command-line reference
OAlexander: Thanks for sharing that! Merge MP3 didn’t work for me, but the standard windows copy command is currently doing it’s magic.