Splitting Sounds
Splitting allows you to take one sound and cut it into two parts without any gaps. Splitting occurs at the caret's position.  

In this image, we show two selected sounds.  We've highlighted the caret in red to show its position ( the caret determines the split point ) .

Select Split from the Edit menu or the shortcut Ctrl+T 

Four new sounds are now in place of the original two.

The caret will be set based on the snap settings. (If you cannot set the caret to a specific location it is probably because snap is on and you need to turn it off.)