Index: core/addon/alsa/alsa.rb
===================================================================
--- core/addon/alsa/alsa.rb	(revision 592)
+++ core/addon/alsa/alsa.rb	(working copy)
@@ -9,4 +9,10 @@
         bg_system("aplay","-q", filename) if FileTest.exist?(filename) }
       stop.call } end
 
+  if command_exist? "afplay"
+    Plugin::create(:alsa).add_event(:play_sound){ |filename, &stop|
+      SerialThread.new {
+        bg_system("afplay", filename) if FileTest.exist?(filename) }
+      stop.call } end
+
 end