[BigETI]

Actually you can't since "DINI" uses fwrite and fread to search for the line, where the data should be manipulated or just read data from. You can invent an own player files system, which uses UTF-8 encoding and decoding to read and write with non ASCII characters. Or simply use database systems such as SQLite or MySQL to have a work around.

Edit: If you don't want to change (I would suggest you should), you should write your code in english, to prevent these issues.
Ben her zaman benim kodları ingilizce yaziyorum.