To edit an existing sound : - step 1 - step 2 - step 3 - step 4 - step 5   Step 3:   Having set the knobs so that all LED's are lit steady, you have successfully set the knobs to the original STORED SOUND values.   a. Now make any changes you require - you can play through while making changes.   b. When you are happy with the changes press SAVE/COPY to end making changes.   . . . all LED's are now flashing 0.5 secs on 0.5 secs off . . .