diff --git a/headers/os/support/DataIO.h b/headers/os/support/DataIO.h
index d05a4c8d4f..e110342465 100644
--- a/headers/os/support/DataIO.h
+++ b/headers/os/support/DataIO.h
@@ -163,4 +163,29 @@ private:
 };
 
 
+class BMediaIO : public BPositionIO {
+public:
+								BMediaIO();
+	virtual						~BMediaIO();
+
+	virtual bool				IsSeekable() const = 0;
+	virtual bool				IsFile() const = 0;
+
+	virtual	bool				IsEndless() const = 0;
+	virtual bool				IsCached() const = 0;
+	virtual size_t				CacheSize() const = 0;
+
+private:
+								BMediaIO(const BMediaIO&);
+			BMallocIO&			operator=(const BMediaIO&);
+
+	virtual	void				_ReservedMediaIO1();
+	virtual void				_ReservedMediaIO2();
+	virtual void				_ReservedMediaIO3();
+	virtual void				_ReservedMediaIO4();
+	virtual void				_ReservedMediaIO5();
+
+			uint32				_reserved[1];
+};
+
 #endif	// _DATA_IO_H
diff --git a/src/kits/support/DataIO.cpp b/src/kits/support/DataIO.cpp
index e7033abdb8..1a647d27ec 100644
--- a/src/kits/support/DataIO.cpp
+++ b/src/kits/support/DataIO.cpp
@@ -602,3 +602,26 @@ BMallocIO::operator=(const BMallocIO &)
 void BMallocIO::_ReservedMallocIO1() {}
 void BMallocIO::_ReservedMallocIO2() {}
 
+
+BMediaIO::BMediaIO()
+{
+}
+
+
+BMediaIO::BMediaIO(const BMediaIO &)
+{
+	// copying not allowed...
+}
+
+
+BMediaIO::~BMediaIO()
+{
+}
+
+
+// FBC
+void BMediaIO::_ReservedMediaIO1() {}
+void BMediaIO::_ReservedMediaIO2() {}
+void BMediaIO::_ReservedMediaIO3() {}
+void BMediaIO::_ReservedMediaIO4() {}
+void BMediaIO::_ReservedMediaIO5() {}