I have quite a large portion of Chinese, Korean etc. songs for which, when I open their folder on Macintosh HD, it displays all the characters perfectly, but as soon as they are loaded into iTunes, they would all turn into a bunch of question marks. Please don't tell me to go retype each and every one of them, as that would be awfully time-consuming and I couldn't really afford to spend so much time on that only... There must be another way to make it work...??