Easy fix...

Take a credit card or something similiar and insert it into the bottom of the CD magazine.

(In more detail) In the front of the CD changer where the magazine is, insert a thin plastic device (about 3" in diameter, 7" long, .020" thick) into the gap between the BOTTOM of the magazine and the carrage assembly. Insert the device towards the center of the magazine and press foward. The magazine will then eject. (To be done with stereo off.)

This will actuate the ejector manually.

Once done, remove all CDs from magazine. Odds are there was one missing, don't worry as this will get it back without damage. Insert the empty magazine into the changer and allow it a few moments to cycle. Once the motion and noise had stopped, eject the magazine with the button and remove stray CD if present.

Re-load CDs into magazine and use as normal.

Hope this helps,

Prospero