What the Frell?

For a couple of weeks now, as opportunity arises, I've been watching my recently-acquired Farscape DVDs. This evening I settled down to watch the next episode, "Thank God It's Friday... Again". Click over to the episode; press "Play"; watch as a furious D'Argo rampages through the shuttle bay, screaming Crichton's name; and listen as Anthony Simcoe's (real, non-D'Argo) voice comes on, introducing the commentary.

Hit "Stop". I don't want the commentary yet; I want to watch the episode by itself, then again with commentary.

Click around to various settings. No, the commentary for this episode is not set. Try again. D'Argo rampages and screams... and Simcoe's voice comes on again.

Hit "Stop". Click around to "Special Features" and ask for the commentary. (Maybe it's a toggle?) D'Argo rampages. D'Argo screams. (This time I see Crichton hiding up above him.) Simcoe's voice comes on.

Turn off the DVD player. Grumble over to the computer to complain and ask for suggestions.

Any ideas, anybody?