CD player eject not working: 2000 T&C Infinity sound

Hi;
Does anyone have any advice regarding the CD player in my
2000 T&C Limited Infinity system with CD and Cassette.
Last week it played a CD just fine and I was able to
eject the CD Now every time I turn on the ignition (which
I assume powers up the radio) I hearthe CD player attempting
to eject the CD. I am very sure the player is empty.
The changer will NOT accept a new CD inserted into the slot,
and I don't hear the motor attempt to pull in the CD.

Any advice on diagnosis?
Where can I take the radio to be reparied / Atlanta area?
How easy is it to pull the unit out myself?
Are there any drop-in aftermarket head units that fit the
slot? I'll bet the T&C is radio slot is not a standard size.

Regards.
Gary