steamproton-systemwine/files_archlinux/steam/alsa_sdl_audiodriver.patch

--- a/steam	2013-02-15 14:43:40.000000000 -0500
+++ b/steam	2013-02-17 23:26:31.951179106 -0500
@@ -17,6 +17,11 @@
 # Set up domain for script localization
 export TEXTDOMAIN=steam
 
+# check if pulseaudio is installed and if it isn't, use alsa for SDL_AUDIODRIVER
+if ! pulseaudio --check &>/dev/null; then
+    export SDL_AUDIODRIVER=alsa
+fi
+
 function show_message()
 {
 	style=$1