Hello,

have not made a backup of your SD Card?
A backup takes 3 minutes. If you had to write all the names of folders and songs, it takes 1 month!

Try again following:

1.SD Card into the KN 7000
2.Load a song that you know from your SD Card.
3.Save the song with his real name on the SD Card.

It is possible that then all names are read.