I've been experimenting with this. U may not need to backup on computer; but even that is easy (after alot of trial and error)
Hit menu
enter "BACKUP" mode
enter"SONG BACKUP"
enter song to be backed up
- change file name with jog wheel if you want to - It will write your file to the "FAT REFORM" partition. Give it a little while. This is stored as data , i think.
Your screen should change from "writing file" to "reading song", then when it's done, you'll be at the backup menu.
To see if your song has been backed up - hit menu, backup, then song restore, and you'll see a list. After it's in there, U can go back to the partition and erase that song, and load it up later by using "song restore".
If your backup is full, you can save song data on computer and clear your backup partition "FAT REFORM"
This is going to save me alot of trouble. If you need help, i hope i can explain it better.