Hello, I didn't got replies from the DTedit author, so I post the link to the OSX version I've compiled today of his brilliant software. Some tweaking was necessary, so we must give a try and return some feedback. On my systems, win and mac, dtedit was not working. I've added a sysex identifying request after any Control Change message sent, and this works for me. I will try to compile the same code for Win32 very soon. Let me know! Flavio Ronco Torino, Italy. Download DTeditOSX.dmg file size: 22 MB ::UPDATE: I've updated the package, there was a wrong set of library files included. Please re-download it and give a try.