DVD-Audio discs really should let you access everything on the DVD-Video zone from the DVD-Audio zone. Smacked bottom for the disc authors there.
The Beatles' "Love" suffers from the same problem.
Anyway, assuming it's like the 2930, if you press SETUP then go into "Other settings", there's a "player mode" option that you can use to tell it to play the DVD-Video zone rather than DVD-Audio.
However, you really should get your connections sorted out. DVD-Audio 5.1 will be superior to DD/DTS. With the 1930, you'll have to use HDMI or 6-way analogue connections to convey multichannel DVD-Audio.