The fastest way to adjust SELECTED areas of the Track is with the "Heads Up Display." Using the Razor is too slow and doesn't get to the results fast enough - your too busy cutting 2 lines around the wave file. And Key Frames as well are too Slow and time consuming (there are times when you do need them but not here.) The Fastest way is to SELECT the Area and quickly bring the VOLUME DOWN. You're done in seconds. Please make accessible the "Heads Up Display" in the MULTITRACK Editor mode. Thank You