Actually, yesterday I tried following the recipe for using brew exclusively, but brew update fails with some dyld issue and Xcode complaint. I verified Xcode is installed with command line tools, but there must some interaction with software installed using other systems. Too bad these porting/installation helpers like fink or brew all insist on reinventing the wheel, instead of installing in a standard or at least compatible way.
I'm running 10.9. Is there a way to clean up the path just for brew (I.e. make it work without obliterating other installs)?
Update: it finally worked, after obliterating /opt/local and allowing brew to overwrite the links for portaudio and fftw. (I decided that it's unlikely I installed something important on this machine.) Couldn't find either fink nor macports on this machine, so the conflicting stuff must have been from manual installs.
Now of course it turns out none of the microphones I have provide a suitable input for reliable operation.