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How-to Tip: Lossless Concatenation of MP3 Files

By Howard Best, October 11, 2001

(llbest.com)


Did you know that you can concatenate two MP3 files into one MP3 file on any Windows computer very quickly and easily using DOS commands? Simply create a text file in the same folder as the MP3 files, put the following 3 lines into it, rename it with a “.bat” extension, and then double click on it’s icon. It’s as simple as that!

copy /b "file name 1.mp3"+"file name 2.mp3"
del "file name 2.mp3"
ren "file name 1.mp3" "file name 1 & file name 2.mp3"

…or, if you want to keep the original MP3 files, then use the following instead:

copy /b "file name 1.mp3"+"file name 2.mp3" "file name 1 & file name 2.mp3"

It doesn’t even make the slightest bit of difference whether or not the files have ID3v1 or ID3v2 tags or both! Of course, you could end up with ID3 tags smack dab in the middle of the file instead of at the beginning and the end like they are supposed to be, but so what? I’ve tried playing the resultant MP3 files using Winamp and also on a portable MP3 player, and they all play without a hitch (or even a click)! But for you purists out there, you could delete the ID3 tags before doing the concatenation, and then add them again afterwards.

One big advantage of using this method is that you don’t lose any sound quality as you would if you did the concatenation using a program such as Adobe Audition or Sound Forge.


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