Pentax Optio S5i Connection Manual page 52

You can also add files by dragging
and dropping them from ACDSee
for PENTAX or the desktop into
the [Edit Show] window.
The area in the [Edit Show] window where video (movie), images, and
music/audio files can be rearranged is called the Timeline.
2
Drag and drop video and images and rearrange them.
When loading an audio track, you
can drag the audio track to the
point in the Timeline where you
want the audio to begin playback.
To display the audio tracks, click the [Toggle View Mode] button.
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