Utool – complete song backup

On the export tab you can select the “directory” option, in this case the exporting going to your local HDD instead of removable HDD.
If you want to use stereo and multirack songs it would be useful to use subfolders: “Recordings” folder for the multitrack songs and “Music” for the stereo songs
That can be your local “backup” from the songs.
You can re-import the song (from your “backup folder”) if you need to replace/modify one track in the song.