Shortcut 

Description 

Ctrl + A 

Select waveform in active window. 

Ctrl + Z 

Undo last action. 

Ctrl + Y 

Repeat last action. 

Ctrl + C 

Copy selected region to clipboard 

Ctrl + X 

Cut the selected region to the clipboard. 

Shift + N 

Paste selected region to a new audio steam. 

Shift + M 

Mix selected region with active audio stream. 

Shift + Ins 

Insert selected region to active's selected stream point. 

Shift + O 

Overwrite active audio stream's data with selected region. 

Del 

Delete selected region. 

Shift + Ctrl + Home 

Select from current point to the start of the audio stream. 

Shift + Ctrl + End 

Select from current point to the end of the audio stream. 

Ctrl + T 

Trim region outside selected region 

Ctrl + M 

Trim to the start of the audio stream 

Ctrl + E 

Trim to the end of the audio stream.