You could create a master folder on your PC hard drive, called "Technics Backups" and then within that folder, create another series of folders - one for each of your floppy discs. Then copy each of your floppy discs to it's own folder. This way, you can just copy them back to a floppy if and when needed and you won't need lots of extra floppy discs.
If you wish to save a little space on your PC hard drive, you could ZIP the files.

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Willum