[LAU] zynaddsubfx / yoshimi... beginner's questions

Hi everybody, I'd like to learn more about how to use zynaddsubfx. I know the basic setup and I understand the most obvious parameters, but is there something like a manual or an "advanced" tutorial somewhere? Also, what is the actual difference between yoshimi and zynaddsubfx? Yoshimi's site states something about better jack and midi support, but does this still apply to current releases? I can't test yoshimi yet because it fails to build on my system (ARCH 64). Its INSTALL instructions say to ask for help on this list, so I dare to post the stack here, just in case a charitable soul knows where I should look... [ 54%] Building CXX object CMakeFiles/yoshimi.dir/Effects/EQ.cpp.o [ 55%] Building CXX object CMakeFiles/yoshimi.dir/Effects/Distorsion.cpp.o [ 56%] Building CXX object CMakeFiles/yoshimi.dir/Effects/DynamicFilter.cpp.o [ 57%] Building CXX object CMakeFiles/yoshimi.dir/MusicIO/MusicClient.cpp.o [ 58%] Building CXX object CMakeFiles/yoshimi.dir/MusicIO/MusicIO.cpp.o [ 59%] Building CXX object CMakeFiles/yoshimi.dir/MusicIO/JackEngine.cpp.o /tmp/yoshimi-0.060.12/src/MusicIO/JackEngine.cpp: In member function ‘bool JackEngine::connectServer(std::string)’: /tmp/yoshimi-0.060.12/src/MusicIO/JackEngine.cpp:53:24: error: ‘usleep’ was not declared in this scope /tmp/yoshimi-0.060.12/src/MusicIO/JackEngine.cpp: In member function ‘void* JackEngine::midiThread()’: /tmp/yoshimi-0.060.12/src/MusicIO/JackEngine.cpp:407:16: warning: converting ‘false’ to pointer type ‘void*’ [-Wconversion-null] make[2]: *** [CMakeFiles/yoshimi.dir/MusicIO/JackEngine.cpp.o] Error 1 make[1]: *** [CMakeFiles/yoshimi.dir/all] Error 2 make: *** [all] Error 2 But before even troubleshooting, I'd like to know if, in your experience, yoshimi offers something really different than zynaddsubfx. Cheers to all, Victor