Sorry, I do not have an 'oh yeah' answer for you.
I have used DEX quite a bit and, unless EMC has changed it a lot recently, DEX would do the job. This is not the normal way the software is set up but DEX is old and feature rich enough that it would not be hard to do what you want. It would not be a one click solution but it is not that hard.
Another product you can look at is
K-Par Archimedia. Archimedia will also do what you want. The normal UI is not one click, either, but it is simpler than DEX. They also have a wide selection of command line utilities that you could use to roll your own system with a script, VB, or web based app. K-Par is a Canadian company out of Calgary; you might want to call them and explain what you want. They might be able to put you on to one of their OEMs if someone has a product that will fit the bill.
Good luck. I hope someone else has a better answer for you.