Enabling Audio Scrubbing
By default, scrubbing in the timeline is set to video-only to provide faster operation. You can optionally turn on audio scrubbing through a context menu command in either the Sequence pane menu or the Media pane menu.
To enable audio scrubbing:
Click the Pane Menu button in the Sequence pane or the Media pane and click Audio Scrubbing.
A check mark indicates that Audio Scrubbing is enabled. To disable audio scrubbing and remove the check mark, click Audio Scrubbing again.