audacity 1.1.3 depends on the fftw package. When configure is run for audacity, it reports that FFTW could not be found and no support will be built for it. Possibly it's because fftw-3.0.1 names the include file "fftw3.h" and audacity is looking for "fftw.h" ?
probably the depend needs to be updated to fftw-2*... I'll check this out...
new 1.1.3 and 1.2.0_pre3 ebuilds are now in portage.