eyeD3

Read and manipulate metadata of MP3 files. More information: https://eyed3.readthedocs.io.

eyeD3 filename.mp3

eyeD3 --title "A Title" filename.mp3

eyeD3 --album "Album Name" *.mp3

eyeD3 --add-image front_cover.jpeg:FRONT_COVER: filename.mp3