song manager is on the cd supplied with the 7000.
You can drag and drop to a new card as much as you like, which will display the floppy file names, but as soon as you save on the card the inf file is fixed and you can't do it anymore. This is explained in 5.02.

Use our SD Card tool for file copy, but the advantage of song manager merge is all your long file names on both cards are retained.