How do I change settings on my Razr Maxx so Zedge can access downloaded music?

[AC Question]

How do I change settings on my razr maxx so zedge can access downloaded music?

I have been using Zedge for a few years( for ringtones) and have several downloaded. When I tried to change my ringtone yesterday, a message came up saying the the downloads can not be accessed without storage permission. How do I enable the storage permission?