I suggest try to reset your unit... unpluging everything (including unplugging the changer from the radio and the changer from the wall), waiting 30 minutes or more, and then plugging it back together. If this did not help then, unfortunately, the only solution is to take the Bose apart and that's a scary proposition. If you flip it over, you'll notice little plastic "dimples" You'll have to pop each of these which will take the faceplate off.
Once the face plate is off, you'll have to take the Bose cover from the CD Tray off. There'll be the familiar little pinhole under the tray that you can stick a paper clip in and the tray will come back to its position or just put a little pressure on it.OR else.
When the cover is out the mechanisim will be visible. Look for the offending CD. You may have to plug in and cycle the machine. Be careful--no shocks please. Work it. Help it move. The shield may interfere so attend to that. Carefully remove the CD. It WILL be difficult. Clearances are close. Repeat to remove any other CD's.
Carefully see what the door is caught on, or remove whatever debris might be there (hair, dust, etc) use q-tips and toothpicks.It will remove all your disc.
It will fix your problem or else there is broken spinning motor,and your system may need to be service.can be done in any electronics repair shop, contact
BoseĀ® Technical Support, or call 1-800-278-1281
Hope it helps.