Tonight I compiled the dfbinimage-plugin with a recent portaudio and fltk (not commited yet) and I remember some games use CDDA (Wipeout for example) but no matter which game I tried: na CDDA :-(
Before I dig deeper: Had anybody of you success in hearing CDDA with the dfbinimage-plugin? I've got the feeling that the emulator does not always recognize when it should start the audio...
Well, I tried using Gran Turismo through dfbinimage (Is that CDDA? Is there a list of games that are CDDA?) and had to turn the volume up within the plugin to actually hear the music. I also set the option "Repeat all CDDA tracks" within the plugin.
Not sure if that helps, since I hardly ever use this plugin, so am not really sure.
I don't know of a list with CDDA-games :-(
Wipeout, Doom and Tekken 1 are at least games which lack of background music. I am not sure if those use CDDA.