Room Treatments - How?

Try also
www.GIKacoustics.com
www.realtraps.com

Thanks for the recomendations, gents. But I'm still curious - is there no program that will turn measurements into a "plan"? (for lack of a better word). Are treatments that vendor-specific?

The measurement programs will give you an idea of the problems of your room, they will not tell you which product would work best or where to place them. How could they given the multitude of products on the market. That will have to be done by you, a manufacture or a custom installer.

room treatment would apparently be one of those areas where 'art meets science'.
To get a definite answer is quite impossible. You don't know everything you'd need to know and I doubt anyone knows how it all works to get a 'DO THIS' to get THAT result kind of answer.
That there are general principles and a lot of knowns is a YES. That an equation or simple system approach will hit the 'bullseye' is probably NO.

Even designing a large concert hall or recital hall from scratch will require a bit of fine-tuning when it's done. To do a retro on an existing space, I'm thinking, would be more difficult. These guys use extensive computer modeling and have complete design and materials control....from first shovelfull of dirt to the last dab of paint.

Another helpful group is Rives Audio.
http://www.rivesaudio.com/home/home.html
My connection to Rives? I bought a calibration CD from them. It is matched to the RadioShackup analogue SPL meter.

Another room acoustics question with no information about the room or system.

Give me more information about your room and your system and I will see what I can do to help.