Need help! Mod apk file topic

Please help me change name of 2 apks file. Because i don't have any windows pc now. Thanks so much.

Anyone help me change name of 2 apps.
WALKMAN to Walkman™
And Root Explorer to File Manager.
I'm using Mac Os so can't dec file and change it.
Link file.
https://docs.google.com/file/d/0B894...p=docslist_api
https://docs.google.com/file/d/0B894...p=docslist_api
Thanks so much!
I'm using xperia mini pro.