In article , Gary Morrison
wrote:

In digital performer, is there any easy way to select a region of audio
- just simply hilight it - and silence that audio? I mean truly silence
it, as in modifying the audio data itself.

How about opening it in the audio editor, selecting the part you want to
silence and hitting delete. If you then save/export the file it should
make the change permanent. Works for me, but I have only version 3.0.