- refactored

- BufferMulti numChannels is template parameter

tests/test_main.cpp

@@ -0,0 +1,11 @@
+extern void test_buffer();
+extern void test_buffer_multi();
+extern void test_mix();
+
+int main()
+{
+	test_buffer();
+	test_buffer_multi();
+	test_mix();
+	return 0;
+}