Hello "Ger58",

Yes, from what you wrote it is clear what goes wrong: Technics uses an INF file on the SD-Card to administrate the contents on the SD Card.
From what you like to do, but then successful, like downloading songs from internet or else and moving them from floppy or hard disk directly on the SD-Card, you need a tool like we developed: exactly for this kind of SD managing. You know how much time it takes to copy a song from PC to floppy, load it in the keyboard and save it to SD, one song at a time.
With Songmanager you can backup and restore songtrees and merge two backed up songtrees, on condition that the SD Card is large enough to accomodate. Withour our SD-Explorer tool you can re-shuffle SD-Cards, but also import and export songs from PC to SD Card and vice versa, or from SD Card to SD Card, etc.

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Kind Regards, Fred