http://bugzilla.audacityteam.org/show_bug.cgi?id=545 (P2)

Remove crash-prone "Audio Cache" feature.

src/DirManager.cpp

@@ -1812,6 +1812,8 @@ void DirManager::RemoveOrphanBlockfiles()
 
 void DirManager::FillBlockfilesCache()
 {
+#ifdef DEPRECATED_AUDIO_CACHE 
+   // See http://bugzilla.audacityteam.org/show_bug.cgi?id=545.
    bool cacheBlockFiles = false;
    gPrefs->Read(wxT("/Directories/CacheBlockFiles"), &cacheBlockFiles);
 
@@ -1856,6 +1858,7 @@ void DirManager::FillBlockfilesCache()
       iter++;
       current++;
    }
+#endif // DEPRECATED_AUDIO_CACHE
 }
 
 void DirManager::WriteCacheToDisk()

src/Project.cpp

@@ -4575,7 +4575,10 @@ void AudacityProject::OnAudioIONewBlockFiles(const wxString& blockFileLog)
 bool AudacityProject::GetCacheBlockFiles()
 {  
    bool cacheBlockFiles = false;
+#ifdef DEPRECATED_AUDIO_CACHE 
+   // See http://bugzilla.audacityteam.org/show_bug.cgi?id=545.
    gPrefs->Read(wxT("/Directories/CacheBlockFiles"), &cacheBlockFiles);
+#endif
    return cacheBlockFiles;
 }
 

src/blockfile/SimpleBlockFile.cpp

@@ -596,6 +596,8 @@ bool SimpleBlockFile::GetNeedWriteCacheToDisk()
 
 bool SimpleBlockFile::GetCache()
 {  
+#ifdef DEPRECATED_AUDIO_CACHE 
+   // See http://bugzilla.audacityteam.org/show_bug.cgi?id=545.
    bool cacheBlockFiles = false;
    gPrefs->Read(wxT("/Directories/CacheBlockFiles"), &cacheBlockFiles);
    if (!cacheBlockFiles) 
@@ -607,6 +609,9 @@ bool SimpleBlockFile::GetCache()
    }
    lowMem <<= 20;
    return (GetFreeMemory() > lowMem);
+#else
+   return false;
+#endif
 }
 
 // Indentation settings for Vim and Emacs and unique identifier for Arch, a

src/prefs/DirectoriesPrefs.cpp

@@ -101,9 +101,7 @@ void DirectoriesPrefs::PopulateOrExchange(ShuttleGui & S)
    S.EndStatic();
 
 #ifdef DEPRECATED_AUDIO_CACHE 
-   //vvvvv If confirmed deprecated by version 2.0.2 release, remove this code and the code it affects, 
+   // See http://bugzilla.audacityteam.org/show_bug.cgi?id=545.
-   //      i.e., anyplace that uses "/Directories/CacheBlockFiles" or "/Directories/CacheLowMem".
-   // See http://bugzilla.audacityteam.org/show_bug.cgi?id=545
    S.StartStatic(_("Audio cache"));
    {
       S.TieCheckBox(_("Play and/or record using &RAM (useful for slow drives)"),