Yes! I suppose you want to know how to do it now.....
Move cursor over the begining or the end of a clip. When you see the square icon, hold down the Ctrl key and the left the rodent button ... and ..... "Stretch that clip - 1-2-3 - Strech that clip - feel the burn -FEEEL THE BURN!" . Oh yes, to increase the speed "Squeeze that clip", that is push it backwards and squash it.