How to Upload Music to Newgrounds?

[Android Central Question]

Hello! I made a music on an app named "Music Maker JAM". Which is available on Play Store.
I decided to upload it on Newgrounds with my phone.
However, when i click "Upload", It says "Choose Action" which gives me access to Camera, Camcorder, Voice Recorder and Gallery. But No Music.

Any suggestions?
Thx.
(I'm bad at explaining)

 

[belodion]

No, you’ve explained well.
To what does the app save your music file? Have all relevant permissions to access files been granted?