Please, whatever you do, do NOT auto eject a disc player. Many players are inside cabinets with closed doors. If the player ejects with the door closed, the player will likely be damaged.

For that matter, the same applies to burners in computers. I've seen PC's with doors that cover up the drive bays, and there are no electronics to inform the drive when the door is closed. They too can be damaged by auto-opening.

I have no objections to having an option to auto eject a burner (with the default set to no-ejection), but unless there is a menu option on the disc itself for this action, please don't do it during playback.