Hi, Just in case someone has some time and information to help me with this: Trying to build csound with interfaces in Mac OS X Leopard, gave me errors at this point: csndPythonEnvironment.Append(LIBS = ['csound','_csnd']) First I changed the spelling of Append to lowercase and that changed the error to name not defined for csndPythonEnvironment. I added some hacks to make it work, without knowing if I'm doing the right thing (I predefined it this way: csndPythonEnvironment = []), and got pass that point but then it stopped at: csoundPythonInterface = csndPythonEnvironment.SharedObject('interfaces/python_interface.i',SWIGFLAGS = [swigflags, '-python', '-outdir', '.']) Saying there is no SharedObject method, which I guess might be related to my changes, or not? Cheers, Hector