Doubt about DOSBox

Well, actually my uncle did all the installing stuff back then and just let me play… When I began learning computing those times were already passing to history…

In setup.exe, for either Music sound and SFX sound I’m given several choices. Guess I must select a sound card to begin with. But I’m not sure how to check what sound card I have on my system… Also, what options do you pick when asked in SFX sound how many voices and what quality?