I thought I had changed that in /etc/pulse/daemon.conf, turns out I hadn't, so I did, and it partially solved the problem, for Xine, not for Totem. The other problem was Xine video, after trying all sorts of things, I changed the priority for ffmeg in Xine's settings and now I have good DVD playback at 60-90% CPU usage.
The only remaining issue is that I see more mpeg artifacts than on another machine, I supose Xine prefers another mpeg decoder for a reason. I could not find any way to improve Totem's behaviour or to improve playback on Maverick.
For anyone who wants to play DVDs on Debian armhf:
You probably need to increase the root's partition and filesystem size first.
Second: Get libdvdcss:
Compile and install it, configure it with:
Third: modify pulseaudio's configuration files:
http://www.powerdeveloper.org/forums/vi ... php?t=2094
Then install xine-ui.
Start xine, type alt-s, that will open xine's setup, change the entry "Configurations experience level" from "Beginner" to "Master of the known universe", click the "Apply" button and go to the "Engine" tab, about one third down you will find "priority for ffmpegvideo decoder" change the entry from 0 to 1, click "Apply" and "Close".
Now you can watch DVDs.