take a credit card or a license and push it underneath the cartdrige in the middle, and kind of "pop it in" and out. it should trigger the release spring. If the cd itself is stuck, take it out of the car, pop off the cover and rotate the gears by hand to move it out of position. Ive had to this twice becuase some idiot put a 7th cd in my 6 before I got my alpine.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>