At the moment the only thing I know of along these lines exists as part of the uni-verse project(www.uni-verse.org).

At the moment the software I know of that does acoustical renderings is limited to fairly expensive software. EASE and ODEON are the two largest projects that I know of, and there are some specialized ones out there like DDA for the Duran Audio speakers. To be honest, I haven't used ODEON (WELL above my price range) but I have EASE, and while it certainly does the job, modeling the room in 3D in it is painful to say the least. Thus why I would rather be able to model and render in Blender myself. I am keeping an eye on the Uni-Verse efforts, but I don't expect that to go in the direction I would like for acoustic simulations, it is more likely to simulate environments for use in 3D games and the like, related but different. EASE and/or ODEON MIGHT be able to run in Wine, but due to the copright installation limitations on EASE, I have not yet tried it. At the moment I run it via VMWare as a result.