sub _playersBusy {
	
	my $checkpower = $prefs->get('checkpower');
    my $hiTime;
    my $diff;
	
	for my $client (Slim::Player::Client::clients()) {
		
		if ($checkpower && $client->power()) {
			main::DEBUGLOG && $log->is_debug && $log->debug("Player " . $client->name() . " is powered " . ($client->power() ? "on" : "off") . "...");
			return 1;
		}
		
        $hiTime = Time::HiRes::time();
        $diff = $hiTime - $client->lastActivityTime;
		if ($diff <= INTERVAL) {
			main::DEBUGLOG && $log->is_debug && $log->debug("Player " . $client->name() . " is busy at $hiTime $diff ago");
			return 1;
		}
        
		if ( $client->isPlaying() ) {
			main::DEBUGLOG && $log->is_debug && $log->debug("Player " . $client->name() . " is playing...");
			return 1;
		}
        
 		if ( $client->isUpgrading() ) {
			main::DEBUGLOG && $log->is_debug && $log->debug("Player " . $client->name() . " is upgrading...");
			return 1;
		}
       
	}
	return 0;
}