diff --git a/source/SoundTouch/InterpolateLinear.cpp b/source/SoundTouch/InterpolateLinear.cpp
index c50888e..2f21266 100644
--- a/source/SoundTouch/InterpolateLinear.cpp
+++ b/source/SoundTouch/InterpolateLinear.cpp
@@ -69,9 +69,31 @@ void InterpolateLinearInteger::resetRegisters()
 // the "dest" buffer
 int InterpolateLinearInteger::transposeMono(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples)
 {
-    // not yet implemented
-    assert(FALSE);
-    return 0;
+    int i;
+    int srcSampleEnd = srcSamples - 1;
+    int srcCount = 0;
+
+    i = 0;
+    while (srcCount < srcSampleEnd)
+    {
+        LONG_SAMPLETYPE temp;
+    
+        assert(iFract < SCALE);
+
+        temp = (SCALE - iFract) * src[0] + iFract * src[1];
+        dest[i] = (SAMPLETYPE)(temp / SCALE);
+        i++;
+
+        iFract += iRate;
+
+        int iWhole = iFract / SCALE;
+        iFract -= iWhole * SCALE;
+        srcCount += iWhole;
+        src += iWhole;
+    }
+    srcSamples = srcCount;
+
+    return i;
 }
 
 
@@ -80,8 +102,35 @@ int InterpolateLinearInteger::transposeMono(SAMPLETYPE *dest, const SAMPLETYPE *
 // the "dest" buffer
 int InterpolateLinearInteger::transposeStereo(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples)
 {
-    // not yet implemented
-    return 0;
+    int i;
+    int srcSampleEnd = srcSamples - 1;
+    int srcCount = 0;
+
+    i = 0;
+    while (srcCount < srcSampleEnd)
+    {
+        LONG_SAMPLETYPE temp0;
+        LONG_SAMPLETYPE temp1;
+    
+        assert(iFract < SCALE);
+
+        temp0 = (SCALE - iFract) * src[0] + iFract * src[2];
+        temp1 = (SCALE - iFract) * src[1] + iFract * src[3];
+        dest[0] = (SAMPLETYPE)(temp0 / SCALE);
+        dest[1] = (SAMPLETYPE)(temp1 / SCALE);
+        dest += 2;
+        i++;
+
+        iFract += iRate;
+
+        int iWhole = iFract / SCALE;
+        iFract -= iWhole * SCALE;
+        srcCount += iWhole;
+        src += 2*iWhole;
+    }
+    srcSamples = srcCount;
+
+    return i;
 }
 
 
@@ -100,8 +149,8 @@ int InterpolateLinearInteger::transposeMulti(SAMPLETYPE *dest, const SAMPLETYPE
         vol1 = (SCALE - iFract);
         for (int c = 0; c < numChannels; c ++)
         {
-            temp = iFract * src[c] + vol1 * src[c + numChannels];
-            *dest = (SAMPLETYPE)(temp / SCALE);
+            temp = vol1 * src[c] + iFract * src[c + numChannels];
+            dest[0] = (SAMPLETYPE)(temp / SCALE);
             dest ++;
         }
         i++;