Here's an example, using the following folders: Some Album [Disc 1]/ 01 Song A.mp3 02 Song B.mp3 … Some Album [Disc 2]/ 01 Song P.mp3 02 Song Q.mp3 … This command album-unify 'Some Album [Disc 1]' 'Some Album [Disc 2]' will create this folder and delete the other two: Some Album/ 1-01 Song A.mp3 1-02 Song B.mp3 … 2-01 Song P.mp3 2-02 Song Q.mp3 …