There are two ways to delete media from your Composition.
The first is to select and delete it. This will leave an edit boundary, and the text will be gone. You can recover the text by adjusting the clip trim in the Timeline pane, or finding the original file in the Media Library.
You can also use Descript's "Ignore" feature to skip audio during playback, without deleting the text. This is useful if there is a chance you'll want to add that audio back into a project later.
To Ignore text, select the text you'd like to skip during playback. In the popup toolbar that appears, click the Ignore button (it looks like a Strikethrough icon) or go to the 'Edit' menu and choose 'Ignore'.
Ignored text will display with strikethrough formatting and will be skipped during playback.
If you'd like to bring ignored text back later, select the parts you'd like to hear during playback and press the Ignore button again.
Please note: Deleted text will not appear in exported Transcriptions (Share -> Export -> Text) or Published pages. Ignored text will appear in an exported Transcription, but will not appear in Subtitles or Published Media.