i pulled out the midi in cable. now there's only the midi out cable in my keyboard and the usb in the compuuter. i go into Cakewalk Sonar, insert a midi track, i press keys on the keyboard [ the local parts are ON because if i turn them off i have no sound ], everything sounds good, no echo. i arm for recording, i record, Don't hear the metronome, and when i play back, i don't have sound in my headphones which are connected to the keyboard. i connected my headphones to the computer and played back, and still no sound.