To edit an existing sound : - step 1 - step 2 - step 3 - step 4 - step 5   Step 2:   Having completed step 1, the LED's above the settings knobs will now be lit. You now have to turn the knobs to match the stored settings for that stored SOUND. The lamp above each knob shows you the direction to turn it . . . .   a. If a lamp is FLASHING FAST: turn it up (clockwise) till you find the number (lamp goes steady).   b. If a lamp is FLASHING SLOW: turn it down (anti-clockwise) till you find the number (lamp goes steady).   c. If a lamp is ON STEADY: it is in the right position.   d. Set each LED to STEADY so that you know the original setting for this STORED SOUND.