Index: /trunk/src/VBox/Devices/Audio/AudioTest.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/AudioTest.cpp	(revision 91659)
+++ /trunk/src/VBox/Devices/Audio/AudioTest.cpp	(revision 91660)
@@ -2440,5 +2440,5 @@
     FileA.cbSize    = RT_MIN(audioTestToneFileFind(ObjA.File.hFile,
                                                    false /* fFindSilence */, FileA.offStart, &ToneParmsA, cbSearchWindow),
-                             cbSizeA);
+                             cbSizeA - FileA.offStart);
 
     AUDIOTESTTONEPARMS ToneParmsB;
@@ -2453,5 +2453,5 @@
     FileB.cbSize    = RT_MIN(audioTestToneFileFind(ObjB.File.hFile,
                                                    false /* fFindSilence */, FileB.offStart, &ToneParmsB, cbSearchWindow),
-                             cbSizeB);
+                             cbSizeB - FileB.offStart);
 
     int rc2 = audioTestErrorDescAddInfo(pVerJob->pErr, pVerJob->idxTest, "File A ('%s'): uOff=%RU64 (%#x), cbSize=%RU64 (%#x), cbFileSize=%RU64\n",