What problems are you having? As far as I'm aware, there's only really two (well, three) sound systems:
Kernel sound (built into the kernel, or preferably as loadable modules)
ALSA (Alternative Linux Sound Architecture).
I believe that there's also some non-free sound arch. from which the kernel stuff is based, but I'd say that the kernel stuff is pretty damn good!
Obviously, there's going to be sub-levels, such as the Enlightenment sound-deamon, but that (I believe) runs on top of either kernel/ALSA.