Audio preview area allow you to play audio stream of selected file and save In/Out points.
| · | To start playing preview click on Play button.
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| · | To play from In point to Out point click on Play selected button.
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| · | Pause button allow you to pause playing.
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| · | Stop button will stop playing preview.
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You may browse through the selected audio stream by using track bar
below.
Also you can use buttons for quick jump to the In point
or to the Out point 
in case there is selected only part of file for output 
. See Audio positions setting for more info on how to set In/Out points.