And voila, here is a winamp version! Simply download the winamp plugin, install Winamp::Control and then here's the script. The controls are pretty easy to figure out. Press 'r' (after exiting the 'notepad' program) to grab the next song's lyrics, 'n' to load a different version of the lyrics, and 'q' to quit.

#!c:/perl/bin/perl -w
$| = 1;

use strict;
use LyricFinder;
use Winamp::Control;

my $viewer = 'notepad';

my $winamp = Winamp::Control->new(
    host   => '127.0.0.1',
    port   => 8080,
    passwd => 'our_secret'
);

die "Winamp and/or the httpQ plugin do not seem to be running."
    unless ( $winamp->getversion() );

my $lf = LyricFinder->new();


find_lyrics() while 1;


sub find_lyrics {
    my $artist = $winamp->getid3tag_artist();
    my $song = $winamp->getid3tag_songname();

    my $search = $lf->search(50, $artist, $song);

    print "\nFound ", $search->count(), " possible results!\n";

    while ( my $page = $search->fetch() ) {
        if ( $page->error() ) {
            print "Fetch for ", $page->source(), " failed (", $page->e
+rror(), ")\n";
            next;
        }

        print "Fetch from ", $page->source(), " successfull (200).\n\n
+";
        sleep 2;

        open( my $fh, '>', '.lyrics' ) or die "open failed: $!";
        print $fh $page->lyrics();
        close($fh) or die "close failed: $!";

        system "$viewer .lyrics";
        unlink '.lyrics';

PROMPT:
        print "\n\n>> ";
        chomp( my $cmd = <STDIN> );

        if ($cmd =~ /^[qQ]/) {
            exit(0);
        }
        elsif ($cmd =~ /^[rR]/) {
            print "\n"; last;
        }
        elsif ($cmd =~ /^[nN]/) {
            next;
        }
        else {
            goto PROMPT;
        }
    }

    print "\nNo more lyrics found for given artist and song.\n\n";
}
[download]

It does indeed read from STDIN: you have to pass the artist and song title manually. You could very easily take XMMS::Remote or Winamp::Control and incorporate its methods to extract the artist/song title of the currently playing song.