It actually depends on the way it crashes.
Dosbox emulates a soundcard for you. and outputs it to directX

But as this "bug" is happening with the cvs version this is all the info i will provide.

its a straight crash to desktop, the debug version ran a list of errors, of which i managed to catch that it was a dpmi fault before it died, the game itself (starcon3) runs fine, just the sound setup dies, have just installed pci-128 soundcard, still no joy, so i figure its a bug in the cvs, altho, syndicate at least allegedly works?

Both being protected mode games, it's possible they just don't work right under the current CVS. (Like dosbox says when you start it up, Dosbox does not run protected mode games)

However, some things you want to avoid/try with sound setup programs:

Avoid autodetection... Even on a native SB with a real system made for the game, the autodetect functions in some games crashed. It's a bit wonky in that respect, and bad memory handling in protected mode in some games just makes it worse.

Make sure the SB IRQ matches up between the game setup program and the dosbox.conf. Even though my dosbox.conf has the SB IRQ set to 7, some game setups still autodetect as IRQ5.

If you're only having problems with the setup program, try running the sound setup under windows, setting the options manually, saving the settings, and load the game under dosbox.

And finally, hell, it's mojo, and there's no reason it should work, but try changing the dosbox.conf SB IRQ setting to 5. Some of the newer dos games just would not work right with some motherboards and an SB Pro on IRQ 7. I remember having problems with Star Control 3 back in the day on my SB 16.

Or for the quick and easy way to get Syndicate to run, just go into your syndplus/syndicat directory and run main.exe and you`ll have none of the above problems. You wont be able to play Americain revolt this way, but atleast you can play the original game.