Ah hah! The ultimate qualifier. Forget what you want the system to do, forget about make and model numbers, forget about schematic diagrams. It's all about the bucks.

99.99% of MY MARKET, which is corporate, hospitality, higher education, and military wouldn't bat an eye paying $13k for an 11 zone background music system. Especially one that is automated, easy to use, and cheap to maintain. Especially when I can demonstrate that the problems that they've had in the past are a direct result of not spending the extra few thousand dollars for a system that is flexible enough to keep up with changing business requirements.

I can absolutely see a small day spa or a local bar balking at that price, but then again, we don't know what we don't know (about the OP), right?