Here is a mini-installer for the latest Buzz build. It includes only a few machines, but you can download more from buzzmachines.com.
Installer (x86) (Build 1495) recommended for both 32-bit and 64-bit Windows no dubstep
Installer (x64) (Build 1495) experimental no dubstep
Don't try to install them in the same directory.
Windows 8/7/Vista/2K8 is required.
Builds 1190+ require .NET Framework 4 Client Profile
(also available in Windows Update)
Latest Polac VST Adapters
BuzzGUI svn repository
Buzz is freeware, but I do accept PayPal and Bitcoin donations:
Bitcoin address: 1BuzZ4uVxKUS4NpK4wGRGNVrfgzEEpwtY9