Welcome to the forum.
PowerDirector automatically mutes the audio when you exceed the limits it imposes.
You can overcome this by speeding up/or slowing down the clip just to the point where the audio still plays.
Produce that clip, and then repeat the procedure with your new clip.
As for reverse, do you want the audio to play in reverse also?
HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
Nvidia GTX 960(4GB)/16GB DDR3/
Canon Vixia HV30/HF-M40/HF-M41/HF-G20/Olympus E-PL5.
Tape capture using 6 VCR, TBC-1000, Elite BVP4+, Sony D8 camcorder with TBC.
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