4 files changed, 8 insertions, 8 deletions
diff --git a/src/audioinputengine.h b/src/audioinputengine.h
index 105db49..1701864 100644
--- a/src/audioinputengine.h
+++ b/src/audioinputengine.h
@@ -38,7 +38,7 @@ class AudioInputEngine {
 public:
   virtual ~AudioInputEngine() {}
 
-  virtual bool isMidiEngine() { return false; } 
+  virtual bool isMidiEngine() const { return false; } 
 
   virtual bool init(const Instruments& instruments) = 0;
 
diff --git a/src/audioinputenginemidi.cc b/src/audioinputenginemidi.cc
index e18e446..80cb13a 100644
--- a/src/audioinputenginemidi.cc
+++ b/src/audioinputenginemidi.cc
@@ -76,12 +76,12 @@ bool AudioInputEngineMidi::loadMidiMap(const std::string& file, const Instrument
   return true;
 }
 
-std::string AudioInputEngineMidi::midimapFile()
+std::string AudioInputEngineMidi::getMidimapFile() const
 {
   return midimap;
 }
 
-bool AudioInputEngineMidi::isValid()
+bool AudioInputEngineMidi::isValid() const
 {
   return is_valid;
 }
diff --git a/src/audioinputenginemidi.h b/src/audioinputenginemidi.h
index 82121b7..b892750 100644
--- a/src/audioinputenginemidi.h
+++ b/src/audioinputenginemidi.h
@@ -41,7 +41,7 @@ public:
   AudioInputEngineMidi();
   virtual ~AudioInputEngineMidi() {}
 
-  bool isMidiEngine() { return true; } 
+  bool isMidiEngine() const { return true; } 
 
   virtual bool init(const Instruments &instruments) = 0;
 
@@ -56,9 +56,9 @@ public:
 
   bool loadMidiMap(const std::string& file, const Instruments& i);
 
-  std::string midimapFile();
+  std::string getMidimapFile() const;
 
-  bool isValid();
+  bool isValid() const;
 
 protected:
   MidiMapper mmap;
diff --git a/src/drumgizmo.cc b/src/drumgizmo.cc
index 51cee18..a3e5540 100644
--- a/src/drumgizmo.cc
+++ b/src/drumgizmo.cc
@@ -160,7 +160,7 @@ void DrumGizmo::handleMessage(Message *msg)
 			if(ie->isMidiEngine())
 			{
 				AudioInputEngineMidi *aim = (AudioInputEngineMidi*)ie;
-				mmapfile = aim->midimapFile();
+				mmapfile = aim->getMidimapFile();
 				mmap_loaded = aim->isValid();
 			}
 
@@ -683,7 +683,7 @@ std::string DrumGizmo::configString()
 	if(ie->isMidiEngine())
 	{
 		AudioInputEngineMidi *aim = (AudioInputEngineMidi*)ie;
-		mmapfile = aim->midimapFile();
+		mmapfile = aim->getMidimapFile();
 	}
 
 	return