[LAU] non-mixer, Fedora 13 64-bit, issues

I have got non-mixer to compile and run on F13-64. I had to add /lib64/libpthread.so.0 to the LIBS variables in all of the makefile.inc's, and /lib64/libdl.so.2 also to the LIBS variable in the mixer makefile.inc, and then I had to set LADSPA_PATH, but that's not so bad. What's left is a run-time issue; I don't think non-mixer is finding rubberband: [jeb@youngdavid mixer]$ non-mixer WARNING: File /usr/lib64/ladspa/ladspa-rubberband.cat could not be examined dlerror() output: /usr/lib64/ladspa/ladspa-rubberband.cat: invalid ELF header 130 plugins found in 103 libraries [non-mixer] Your fun is over [jeb@youngdavid mixer]$ The rubberband rpm is installed. Anyone have a suggestion? J.E.B.