Ok, finally got around to getting this out. My company lost the bid for the followup to the contract I'm on, so I've been a bit busy getting my resume updated and other such things.
Take a look at it, and let me know how it is. It's not perfect, but I've found it does pretty much what I want it to.
http://www.subsim.com/radioroom/down...o=file&id=2787