Hi, I too had this problem, the unit is a 6 disk multi change unit the disks are loaded into the front slot press the load button and select a number between 1&6 and the disk will be taken into the body of the player, repeat until all disks are loaded.
To remove you can press the button to the right of the load button and all disks will be ejected one by one to change a single disk press the load button and the number of the disk you wish to replace.
Slaughts
April 2008