UTF8 and arabic file names

first I want to thank you for this fantastic music player :)

I have media files with Arabic names, so I go to edit the config file and made this UseRCCForFilesystem = yes

and when I run mocp it give me this ~$ mocp
Wrong option name: 'UseRCCForFilesystem'.
FATAL_ERROR: Error in config file, line 136.

I don't know what's wrong here?!

Is there any way to display arabic filenames correctly?