Hello, First let me thank you for this fine software.. I had some build problems on OSX 10.3 based on my choice of root filesystems.. attached is the build output. Initially, I was quite puzzled by this, but then I recalled some discussion I'd had with the fink (http://fink.sourceforge.net/) developers about some build problems for gnome libraries. Basically, it seems as though apples HFS/HFS+ filesystems are case insensitive, allowing a programmer to write things such as "#include " instead of "#include " as the file is actually called. The same is true of the link line e.g. LIBS=-framework CoreAudio -framework CoreMIDI -framework CoreFoundation -lstdc++ -lm Changing these allowed me to build with no problems. Thanks again.. it sounds great!!! looking through the language, I don't see any notation for e.g. synchronization keywords / rhythmic markup. Any plans for that? Thanks, -Chris [chris@eyebook:src]$ uname -a Darwin eyebook.local 7.5.0 Darwin Kernel Version 7.5.0: Thu Aug 5 19:26:16 PDT 2004; root:xnu/xnu-517.7.21.obj~3/RELEASE_PPC Power Macintosh powerpc [chris@eyebook:src]$ make osx make -f makefile.osx bison -dv -b chuck chuck.y gcc -D__MACOSX_CORE__ -O3 -c chuck.tab.c flex -ochuck.yy.c chuck.lex gcc -D__MACOSX_CORE__ -O3 -c chuck.yy.c gcc -D__MACOSX_CORE__ -O3 -c chuck_main.cpp In file included from chuck_bbq.h:65, from chuck_main.cpp:49: midiio_osx.h:37:31: CoreMidi/CoreMidi.h: No such file or directory In file included from chuck_bbq.h:65, from chuck_main.cpp:49: midiio_osx.h:83: error: 'MIDIClientRef' is used as a type, but is not defined as a type. midiio_osx.h:84: error: 'MIDIEndpointRef' is used as a type, but is not defined as a type. midiio_osx.h:85: error: 'MIDIPortRef' is used as a type, but is not defined as a type. midiio_osx.h:111: error: parse error before `*' token midiio_osx.h:118: error: 'MIDIClientRef' is used as a type, but is not defined as a type. midiio_osx.h:119: error: 'MIDIEndpointRef' is used as a type, but is not defined as a type. midiio_osx.h:120: error: 'MIDIPortRef' is used as a type, but is not defined as a type. make[1]: *** [chuck_main.o] Error 1 make: [osx] Error 2 (ignored)