Right, now it is becoming a bit clearer.
Sounds like you have a single player in the dash. It is possible to hang a boot mounted change off the back of these, and pressing the select button on the cd player switches between the either "cd in" or "cd changer".
If you have a changer in the boot, when you press the select button, a red light should appear telling you which one is selected.
As said before, the boot changer is behind the left hand side trim panel. Slide the front open and press the eject button. That should eject the magazine.
Have a look and tell us what you find. If there is no magazine in the changer, then there will be umpteen on ebay.