Fixed bug #316

Looks like this is a long standing typo... is this code even used anymore?

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%402114

src/audio/ums/SDL_umsaudio.c

@@ -151,7 +151,7 @@ Audio_CreateDevice(int devindex)
 }
 
 AudioBootStrap UMS_bootstrap = {
-    UMS_DRIVER_NAME, "AUX UMS audio",
+    UMS_DRIVER_NAME, "AIX UMS audio",
     Audio_Available, Audio_CreateDevice
 };