I Hope this helps. I run two Laptops and have an External Drive for backups. What I do is import all my new cdg's on one of the laptops. I then copy the new kma files to my external hard drive and then copy them from the external hard drive to the other laptop. I keep all the kma files in a single folder on each computer and on the external hard drive. The external hard drive is simply for backup. I do not run the show from the external hard drive so I simply rebuild the database on both laptops after the new files are on them. I have never had a problem doing it this way and I have all my songs on 3 hard drives. The chances of all 3 going bad at once is pretty slim.
Merry Christmas everyone.