What settings would be best for the above soundcard in foobar.
I am not to clever with these things and would appreciate any help regarding about things like what output, data output format, dithering and those sort of things.

Personally, I use 24-bit fixed-point, no dithering and directsound v2.0 output.

And the only DSP I use is the advanced limiter (just to be safe when playing the odd non-replaygained file).

i use 16bit