Download and install the Music Label Editor.
Find the directory where the songs are stored.
Click on the three points on the right.
Click the Edit tab.
Click on the vacancy.
Click Select from Local Storage.
Select a picture, and then click the Save button.
Label updated successfully.
Extension: The information such as singer, song title, picture, album name, year and style in MP3 audio are all saved in ID3 information.
ID3 information is usually located in a few bytes at the beginning or end of an mp3 file.
ID3 information is divided into two versions: v 1 and v2. Version v 1 at the end of the file, storing song information. Version v2 starts with embedding lyrics and pictures.