Step 1. Download HJSplit. Launch HJSplit and click on the “Join”

Step 2. In the “File Join” window, click on the “Input file” button.

Step 3. Choose the files starting with 001 as an extension. All other files with that continue the extension will be added to the resulting file.

Step 4. Click on “Start” to initiate the process.

Step 5. When everything is done, you will receive the final result in the form of the intended file format, be it MP3, WMV or AVI.

Pls check images below for more details (Don’t forget: save all files need to join in the same folder)

Download HJSplit 2.4 Here