Help Rocket Player - Any way to edit mp3 tags on sd card files in Kitkat?

[musiclover7]

I just rooted my new S5 this afternoon, and was able to restore write access to the installed sd card to several apps including es file explorer, etc. What I can't figure out is how to grant access to the sd card, to Rocket player so that it can actually edit mp3 tags of some of my music files. This is an important feature of this great app, and am hoping someone has come upon a work around. All of my music is stored on my 64gb SD card. Any help appreciated!