What is Prune?

[nuubie]

I use an audio player called Play. I'm setting some keyboard shortcuts in its Preferences. I want to use Cmd_P as its a standard shortcut for the Play function and Cmd_. for Stop.
But it tells me this:
The key combination "Command + P" couldn't be used, because it's already used by the menu item "Prune".

What in the world is Prune? OS X Help came up with nothing (of course) and Google didn't cough up anything relevant either. Doing a Google search for
"OS X" "menu item Prune"
had zero results.

[VirtualTracy]

Don't know other than Command + P is the default shortcut for Print .... have you tried that shortcut to call it's bluff and find out exactly what this 'Prune' is?

For play in iTunes, I use Ctrl + Spacebar FWIW.

[elander]

The lexical meaning of the verb "prune" is to get rid of surplus. If you had bothered to check the menus you wold've found it in File->Play Cue->Prune. Just below "Clear" and above "Scramble". So, it probably removes dupliccates or missing files from a Play Cue.