Perl interface to libcdaudio: http://cdcd.undergrid.net/

no docs yet, but here's an example:

use Audio::CD ();

my $id = Audio::CD->init;

my $info = $id->stat;
printf "tracks = %d\n", $info->total_tracks;

my $data = $id->cddb_lookup;

printf "%s / %s [%s]\n", $data->artist, $data->title, $data->genre;

my $tracks = $data->tracks($info);
for my $track (@$tracks) {
    printf "%s\n", $track->name;
}