Playback Cursor

The playback cursor is a vertical, white line that moves across the Sound window as the audio plays.

Move the cursor in the following ways:

Use Keyboard Navigation
Right-click on the Sound window graph and choose the Set Playback Cursor or Play From Here command that appears in the context menu.
Click the left mouse button on the time line.
Change the Play button settings so that playback starts at a different place.
Use the Set Cursor Location key (Ctrl+G).

To hide the cursor when playback stops, check the setting under Options | Window.