I just did this real easy. Here's how:
1 Download and install "Audacity" (free audio editor)
2 Import your movie clip into Audacity (it will just load
the audio without pictures)
3 Edit the audio to taste
4 Export the audio from Audacity as a wave file.
5 Import the audio into PD.
This only took me a minute or less. Easy.
Blessings,
Al