Updated SoundTouch library to 1.9.2

Externals/soundtouch/InterpolateLinear.h

@@ -8,7 +8,7 @@
 ///
 ////////////////////////////////////////////////////////////////////////////////
 //
-// $Id: InterpolateLinear.h 179 2014-01-06 18:41:42Z oparviai $
+// $Id: InterpolateLinear.h 225 2015-07-26 14:45:48Z oparviai $
 //
 ////////////////////////////////////////////////////////////////////////////////
 //
@@ -63,7 +63,7 @@ public:
 
     /// Sets new target rate. Normal rate = 1.0, smaller values represent slower 
     /// rate, larger faster rates.
-    virtual void setRate(float newRate);
+    virtual void setRate(double newRate);
 };
 
 
@@ -71,7 +71,7 @@ public:
 class InterpolateLinearFloat : public TransposerBase
 {
 protected:
-    float fract;
+    double fract;
 
     virtual void resetRegisters();