On the an item's edit view, select the Structure tab, then click Edit Structure
Quickly matching a range of time that corresponds to a meaningful segment of content within your audio file, such as a single song within a longer recording, movements of a classical piece, etc.
The editor will open in a modal window overlaying the rest of the page.
...
This represents, contains the
bottom waveform view
shows the entire length of the recording
Each heading and section will be represented by a block. Indents indicate nesting in the hierarchy
...
Timespans are labeled ranges of time that turn into hyperlinks in the
click the edit button to change the label, time information
note that the editor works with video as well as audio, but when editing video no image appears