On Sat, Jan 17, 2009 at 9:02 AM, Dave Phillips &lt;dlphilp(a)woh.rr.com <mailto:dlphilp@woh.rr.com>> wrote: IIRC midirgui includes a velocity offset for incoming messages. Ditto for midish and mididings. Thanks! Mididngs looks like it may help some... What I really want is an application that will play back my midi files, and allow me to change the velocity on-the-fly. And it need to be able to save the new velocity... Sounds kinda impossible, I know. If I knew anything about MIDI, I might try making it myself...