Audio:
Click on your audio track on the timeline, then you can find the Magic AI icon in the toolbar above. Click it, and you'll see Vocal Remover option.
Video:
Click on your video on the canvas, then you can find Audio Settings in the toolbar above. Click it, and you'll see Vocal Remover option.
Your music will be divided into two audio files, Vocal and BGM. They will be added to the Media section and downloaded to your computer.
These two audio files will also automatically replace the original song on the timeline, and you can choose which one to keep.