WIP #34 - updates tuners and tuner model to provide details on

frequency, sample rate, sourced channels, and spectral display in the
tuner view tab.

src/source/tuner/TunerController.java

@@ -221,6 +221,11 @@ public abstract class TunerController implements Tunable
 
 		return source;
 	}
+	
+	public int getChannelCount()
+	{
+		return mTunedChannels.size();
+	}
 
 	/**
 	 * Indicates if the tuner's LO frequency must be updated in order to