ray/global/app/files........change permission on ffmpeg.exe to 777
ray/global/chat/files......change files permission to 777
ray/global/app/files do the same
ray/global/app/im do the same
ray/global/app/movie do the same
ray/global/app/mp3 do the same
ray/global/app/music do the same
Change the "file" folder permissions on all of those to 777.

.htaccess file in the root folder -
From line 3 to line 14 put this there:

<IfModule mod_php4.c>
php_flag register_globals see more Off
</IfModule>
<IfModule mod_php5.c>
php_flag allow_url_include Off
php_flag register_globals Off
php_value upload_max_filesize 20M
php_value post_max_size 20M
php_value output_buffering On
php_value max_execution_time 600000000
php_value max_input_time 700000000
php_value session.gc_maxlifetime 14400000

You can change the size and time to what you want. It all worked for me and my site is fully functional.
I hope that helped.