backslash/slash fixes, again

audio.cpp

@@ -26,7 +26,6 @@ openal_buffer::openal_buffer( std::string const &Filename ) :
 	si.format = 0;
 
 	std::string file = Filename;
-	std::replace(file.begin(), file.end(), '\\', '/');
 
 	WriteLog("sound: loading file: " + file);
 
@@ -105,10 +104,6 @@ buffer_manager::create( std::string const &Filename ) {
     auto filename { ToLower( Filename ) };
 
     erase_extension( filename );
-    // convert slashes
-    std::replace(
-        std::begin( filename ), std::end( filename ),
-        '\\', '/' );
 
     audio::buffer_handle lookup { null_handle };
     std::string filelookup;