#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11150757
#use warnings; # uncomment for newer perls

my $target = "/home/zsolti/Temp";
$target = '../mnt/home/old'; # FIXME for testing on my system
my @exclude = (
  #'2023_02_21_Szentendre_Pilis_EK_oldal'
  'webftp'
 ,'x'
);

my (@audioFiles, %playList);
my $numOfRandFiles = 10;

my @stack = $target;
while( my $path = pop @stack )
  {
  grep $path =~ /\/\Q$_\E\z/, @exclude and next;
  push @audioFiles, grep -f, <$path/*.mp3>;
  push @stack, grep -d, <$path/*>;
  }

$playList{ splice @audioFiles, rand @audioFiles, 1 or last } = $_
  for 1 .. $numOfRandFiles;

printf "%3d %s\n", $playList{$_}, $_ for sort keys %playList;