Eric: Bite you tongue. We perl programmers do not put PHP scripts on websites! (besides, the bandwidth drain for regular use would be terrible) I'd not want it to be limited to PPP/P5, so no Python. Sorry, that's not what I have in mind. MusicMimic is more what I'm thinking. Jim, VB sounds like it would be the easiest to build this in, and since you have time, that sounds good. MIDI is an open standard and specs exist friggin everywhere online. Windows has built-in DLLs for it, too. Java might also be a good option becuse it would then not need porting to Mac, whereas a PC developed app would -- but I don't like Java so I'm not going to endorse it, really.