You'll need to declare $cue_file_found, and you'll also need to use strictures. I ran this and got no errors:

#!/usr/bin/perl

use strict;
use autodie;
use warnings;

sub exractSongTitlesFromCueFile {
    my ( $cue_file_to_parse ) = @_;
    my @album_info;
    my $w = 0;
    my $cue_file_found = '/tmp/cue/cue_file';

    open( CUEFILEFOUND, '<', $cue_file_found )
      or die "Could not open cue file named: 
        $cue_file_found! $!\n";
    while (<CUEFILEFOUND>) {
        if ( $_ =~ /\s+TITLE "(.*)".*/ ) {
            $album_info[$w] = $1
              || die "Error 004: 
               Couldn't assign song title to array! $!\n";
            $w++ || die "Error 005: 
               Could not increment array pointer $!\n";
        }
    }
    close(CUEFILEFOUND);
    return (@album_info);
}
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