just wanna contribute something in your karaoke project.. this code requires perl-MIDI-Perl to run. I got it from cpan, its not available on the standard fedora13 repo. anyway here is a code to be able to extract lyrics of a midi file...

sub send_to_shell {
    my ($widget,$file) = @_;
    my $string;
    my $opus = MIDI::Opus->new({ 'from_file' => $file,
        'exclusive_event_callback' => sub{
                my $temp = $_[2];
                chomp $temp;
                if($_[0] eq 'text_event'){
                    if($_[1] == 0){
                    }else{
                        $string = $string . $_[2];
                        push @arr_lyr, $_[2];
                    }
                }elsif($_[0] eq 'track_name'){
                    $marker = $_[2];
                }
            },
        'include' => \@MIDI::Event::All_events,
        'exclude' => \@MIDI::Event::MIDI_events,
    });
    @line_lyrics = split(/\/|\\/,$string);
    shift @line_lyrics;
    print "Marker: $marker\n";
    print "_____START_____\n";
    $start = 0;

    # start song
    my $cmd = "timidity '$file'";
    print $wfh "$cmd\n";

}
[download]

enjoy! you can use this to replace the same sub routine on my previous post.