1. Download and install the format factory converter in your computer, and then open it. Click the Advanced option at the bottom of the interface.

2. In the advanced option settings, click to open audio merging again, as shown in the figure below.

3. In the audio merging interface, click Add File, and then select two songs to merge and import, as shown in the figure below.

4. After adding, click on the clip and set the start and end time of the merged song (set a song you need after the previous one, each song lasts for one minute, and it will take two minutes).

5. After the above steps are completed, you can click Start Merging Audio Files in the menu, as shown in the figure below.

6. After merging, you can right-click the merged file and select Open Output Folder in the pop-up menu.

7. At this time, you can find the MP3 audio file of two songs, as shown in the figure below.