ratDVD 0.6 has been released, with a hefty change log that includes AC-3 SP/DIF support & a new tagging feature. Check it out & grab it if you use it.

"As we all know from MP3, once you get a huge collection of titles, tagging is the one thing you really need. Until now, downloaded movies were just a filename on your harddisk. With ratDVD tagging information, you can build your own digital library of virtually hundreds of movies and never lose track of which one is which."