I got CSound to play my midi file--figured out how to clean up the file in CakeWalk. I get an error message for most demo instruments saying I can't use midi for p5. Isn't that the usual p field for frequency? Also, I'm not sure how to have a midi file control the envelope. Thank you for your time. Jim http://www.spaceanimals.com http://www.myspace.com/theelectricstarlightspaceanimals