Play/Pause - spacebar

Zoom in - I

Zoom out - O

Autoscroll - A

Seek left / right - left arrow/right arrow

Scroll - shift+scroll

Record - shift + R

Undo - ctrl/cmd + Z

Redo - ctrl/cmd + shift + Z

Duplicate - shift + D

Upload - shift + U

Delete - delete

Mute - shift + M

Multiple clip select - ctrl/cmd + click

Create new track - shift + T

Delete track - shift + delete

Isolate track - S

Mute track - M

Lock track - F

Selection (regular cursor) - 1

Split cursor - 2 or hold C

Range cursor (select a section to delete) - 3

Mute cursor (select a track(s) to mute) - 4