reverse 0384b236 and fix saving ID3v2 frames

configure.in

@@ -52,12 +52,14 @@ dnl =======================
 dnl = checking for taglib =
 dnl =======================
 if test "$taglib" = "yes" ; then
-	PKG_CHECK_MODULES([taglib], taglib >= 1.5, , AC_MSG_ERROR([TagLib >= 1.5 is required]))
-	AC_SUBST(taglib_LIBS)
-	AC_SUBST(taglib_CFLAGS)
-	CPPFLAGS="$CPPFLAGS $taglib_CFLAGS"
-	LDFLAGS="$LDFLAGS $taglib_LIBS"
-	AC_CHECK_HEADERS([taglib.h], , AC_MSG_ERROR([missing taglib.h header]))
+	AC_PATH_PROG(TAGLIB_CONFIG, taglib-config)
+	if test "$TAGLIB_CONFIG" != "" ; then
+		CPPFLAGS="$CPPFLAGS `$TAGLIB_CONFIG --cflags`"
+		LDFLAGS="$LDFLAGS `$TAGLIB_CONFIG --libs`"
+		AC_CHECK_HEADERS([taglib.h], , AC_MSG_ERROR([missing taglib.h header]))
+	else
+		AC_MSG_ERROR([taglib-config executable is missing])
+	fi
 fi
 
 AC_CONFIG_FILES([Makefile src/Makefile doc/Makefile])

src/tag_editor.cpp

@@ -159,12 +159,13 @@ bool WriteTags(Song &s)
 		{
 			MPEG::File file(path_to_file.c_str());
 			ID3v2::Tag *tag = file.ID3v2Tag();
+			String::Type encoding = UNICODE ? String::UTF8 : String::Latin1;
 			ByteVector Composer("TCOM");
 			ByteVector Performer("TOPE");
 			ByteVector Disc("TPOS");
-			ID3v2::Frame *ComposerFrame = new ID3v2::TextIdentificationFrame(Composer);
-			ID3v2::Frame *PerformerFrame = new ID3v2::TextIdentificationFrame(Performer);
-			ID3v2::Frame *DiscFrame = new ID3v2::TextIdentificationFrame(Disc);
+			ID3v2::Frame *ComposerFrame = new ID3v2::TextIdentificationFrame(Composer, encoding);
+			ID3v2::Frame *PerformerFrame = new ID3v2::TextIdentificationFrame(Performer, encoding);
+			ID3v2::Frame *DiscFrame = new ID3v2::TextIdentificationFrame(Disc, encoding);
 			ComposerFrame->setText(TO_WSTRING(s.GetComposer()));
 			PerformerFrame->setText(TO_WSTRING(s.GetPerformer()));
 			DiscFrame->setText(TO_WSTRING(s.GetDisc()));