Use standard library style members of wxArrayString (and wxString) ...

... which will make it easier to change the types of those containers to
std::vectors of other string-like classes

for wxString,

IsEmpty => empty
Clear => clear
Alloc => reserve

for wxArrayString,

Count => size
GetCount => size
IsEmpty => empty
Add => push_back
Clear => clear
Empty => clear
Sort => std::sort (only with default comparator)
SetCount => resize
Last => back
Item => operator []
Alloc => reserve

src/ondemand/ODDecodeFlacTask.cpp

@@ -50,7 +50,7 @@ void ODFLACFile::metadata_callback(const FLAC__StreamMetadata *metadata)
    {
       case FLAC__METADATA_TYPE_VORBIS_COMMENT:
          for (FLAC__uint32 i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
-            mComments.Add(UTF8CTOWX((char *)metadata->data.vorbis_comment.comments[i].entry));
+            mComments.push_back(UTF8CTOWX((char *)metadata->data.vorbis_comment.comments[i].entry));
          }
       break;