Shift + Space bar is now the universally applicable “Audition” function, and there is no longer a keyboard equivalent for Preview Loop in the Loop Explorer… but you can make your own.
- Go Options / Key Bindings.
- In the Bind Context drop-down menu, choose Loop Explorer View.
- You can assign a keyboard equivalent command to “Play”; hit this when a loop is highlighted and it will play back. Or assign a keyboard equivalent to “Auto-Preview” and whenever you select a loop it will play back automatically.