+##### Sound configuration #####
+
+.ifndef DP_SOUND_API
+DP_SOUND_API=$(DEFAULT_SNDAPI)
+.endif
+
+# NULL: no sound
+.if $(DP_SOUND_API) == "NULL"
+OBJ_SOUND=$(OBJ_SND_NULL)
+LIB_SOUND=$(LIB_SND_NULL)
+.endif
+
+# OSS: Open Sound System
+.if $(DP_SOUND_API) == "OSS"
+OBJ_SOUND=$(OBJ_SND_OSS)
+LIB_SOUND=$(LIB_SND_OSS)
+.endif
+
+# BSD: BSD / Sun audio API
+.if $(DP_SOUND_API) == "BSD"
+OBJ_SOUND=$(OBJ_SND_BSD)
+LIB_SOUND=$(LIB_SND_BSD)
+.endif
+
+