I'm not even sure where to start looking or what to look for. Your suggestions are welcome!
Application: I will be using the software as I finish our basement theater (the bar area specifically) and would like something that allows me to place pieces of furniture (i.e. speakers, theater seats, etc) in various places in the room as well as enter the existing data such as wall lengths, ceiling heights, etc. It would be helpful if the software would allow data input for furniture design as well. (I need to design a center speaker cabinet with drawers, etc). I'm not sure what other information would be useful to you.
BTW, I say, "cheap/free," as I see this as either a single-use or very limited use piece of software for me and don't want to spend an arm and a leg on something that will not be used very much.
Thanks!
-David