Homemade Robotic Arms for CD Duplication?

LA Kings Fan writes "I have this current gig of a job which requires me to make numerous copies of CDRs (in the thousands). Since it would be ludicrous to sit in front of my computer to remove a burned CD and put a fresh one in everytime, I've looked around for better, more sensible solutions. There are two alternatives: CD Duplication Towers and Automated Duplicators. They both have their advantages but are very costly. The cool thing about the automated duplicators is that the burning process is automated by the use of a robotic arm which replaces the burned CD with a fresh one. This is neat, so I was wondering if anyone has attempted to take this concept a step further by essentially building their own robotic arm for their burner on their personal computer. Is this feasible? Can a robotic arm like this be created from off the shelf parts? I'm clueless when it comes to this engineering stuff, so any help would be appreciated."