Change name off apk app topic

Anyone help me change name of 2 apps.
WALKMAN to Walkman™
And Root Explorer to File Manager.
Thanks so much.
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!