Hello, here's a little tip: oss doesn't work out of the box with steam and steam-based games under pulseaudio sound server. In order to enable it, you have to add the "padsp" command at the beginning of the command line that you use to launch steam.
eg: the original command and the new one:
sh -c "/home/jf/cxgames/bin/cxsetup"
padsp sh -c "/home/jf/cxgames/bin/cxsetup"
Then you can add "oss" as a sound driver in the bottle configuration panel and select it in the winecfg configuration panel.
Hope that helps