2 files changed, 3 insertions, 1 deletions
diff --git a/libs/ardour/ardour/auditioner.h b/libs/ardour/ardour/auditioner.h
index 25a7b91158..a0047e225f 100644
--- a/libs/ardour/ardour/auditioner.h
+++ b/libs/ardour/ardour/auditioner.h
@@ -55,6 +55,8 @@ class Auditioner : public AudioTrack
 	bool auditioning() const { return g_atomic_int_get (&_auditioning); }
         bool needs_monitor() const { return via_monitor; }
 
+        virtual ChanCount input_streams () const;
+
   private:
 	boost::shared_ptr<AudioRegion> the_region;
 	framepos_t current_frame;
diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index f90ec77b7e..3c0e393e5e 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -454,7 +454,7 @@ class Route : public SessionObject, public Automatable, public RouteGroupMember,
 	DataType       _default_type;
         FedBy          _fed_by;
 
-        ChanCount input_streams () const;
+        virtual ChanCount input_streams () const;
 
   protected:
 	virtual XMLNode& state(bool);