not me!

I don't even remember that one Bud, but surely I must have said that only single custom "cst" files belong in the "Custom" folder on card

The folder structure is fixed unless you buy Techmanager 7001 which has 240 folders with 16 locations each per card but this includes midis whereas on your existing default system midi files are separate to the Technics folder system, and space is available for audio too.

Song Manager does not rename folders, perhaps the SD Card Tool by Thomas from my original design might help.

If you have floppies already one simple option is to copy each floppy to an SD folder using the 7000, but the method of my tutorial would be far, far quicker with a blank card.