
You will find a number of tools that can help you join mp3 files in large numbers but it is extremely easy when done using JoinExt. It is a free tool that allows you to join a large number of mp3 files. The best part is one does not need to launch the application to so, once installed the option to join them is available in the right click menu itself.

How it Works
- Download the file and install it on your system. The file is available under the freeware license and the size of the file is only 125 KB.
- Now, make sure that all the files you want to join are available in a single folder. If not, collect them.
- Select the files you want to join and right click. In the menu you will find the option Join files, select it.
- A wizard will open wherein you will have to tell the order in which you want to join the files. You can move any file up or down and set them in the desired order. Once the files are in the correct order, click on Next.

- On the next screen, enter the location where you want to save the joined file. You must also specify the name with which you want to save the file along with the extension .mp3 [Note: Even if you forget to enter the extension you can add it later.]. Click Next.
- Now the process will start. The time taken to complete it will depend upon the number of files you want to join.
- Once the wizard says join complete, press Finish.
- Now you can go and enjoy the nonstop music.
Now go to the location where you saved the joined file. Right click on the file and select "Rename" from menu. Rename the file and add .mp3 in the end of file name so that it can show the property of mp3 file and easily open in the media player.

Now, enjoy non stop music :)