Post Boot Animation On SG S3

Hello, I'm trying to install a . I have a Boost Mobile (Same As Sprint) Galaxy S3 On Android 4.3. I noticed there are file called
["bootsamsung.qmg" "bootsamsungloop.qmg" "BST_bootsamsung.qmg" BST_bootsamsungloop.qmg"] I dont know what to do with these files located at "/system/media" also is there any other files I would have to mess with to make my to work?

~~Thank You~~