Again, as was mentioned earlier, look under Manage Drives.. you'll see the Play button, next to your drive, and what's inserted in it.... You'll also see buttons for Rip disk, and Eject.
This was done in order to accomodate multiple media directors inside the house, so that you can play any disc inside the house, no matter which drive, or jukebox it may be in, and what media director it may be attached to.
-Thom